On Rigel 3, Mon-El entered a shrine and while remaining standing prayed for a certain angel to come before him. He had no expectation his prayer would be answered but figured it couldn't hurt to try. As it happened, the Angel of Death appeared before him. She had long black hair, pale skin, dark eyes, and wore a black dress. Her wings, six of them, were also black. Along the frame of her wings were several eyeballs constantly looking about.
Mon gave his typical smirk not giving her any due respect as was his usual rudeness. "Have you come to serve me, Prince Mon-El?" Death asked.
"No," Mon replied boldly. "Nor will I ever."
"And yet, you expect me...to help you," Death rolled her eyes.
"Don't be like that. What have you ever given me for all I have given you?" Mon pointed out.
"What have you ever given me but death, Insane Prince? Did it ever occur to you that death would be the least of my needs? For if life is extinguished, there can be no death. Therefore, it is life that pleases me," Death said condescendingly.
"I save lives by killing the murderers," Mon replied.
"Indeed. Is that why you are here? To kill the one that would murder all the life on this planet?" Death asked knowingly.
"It is," Mon confirmed.
"You cannot win against this foe. You will lose," Death predicted.
"Not with your help," Mon insisted.
Death simply nodded. "The power I give to you now is the power of a god. It may be sufficient enough to destroy your foe...or maybe not. It will require cunning and courage for you to win. You will fight your foe until he is either dead or you are dead no matter how long it takes, years, centuries, millenniums. Do you understand?"
"Crystal," Mon said undeterred.
At night, Mon was in deep contemplation overlooking a large dazzling Rigel city. Above him were countless stars, a perfect sky. Occasionally dragon-like creatures circled around him. Brainiac 5 casually walked up to Mon. "I've come across many exotic creatures in this system. They're beautiful but harmless. They're likely attracted to the ki energy you radiate."
"And you assumed I would kill them?" Mon figured.
"An erroneous assumption?" Brainiac 5 asked.
"It pisses me off to be interrupted when I am in the depths of my contemplation. Even so-called allies are not welcomed," Mon told him off.
"What dark thoughts does your Insane mind dwell on?" Brainiac 5 asked curiously.
"A thousand years ago, I was in this system. They had something I desired, a battery, so five million of them died at my hands. The planet was so badly damaged, the Rigellians abandoned it and colonized this world. I have always been a monster, Barney. I have accepted it, taken pride in it. You cannot conceive the misery I have created in my wake," Mon admitted.
"Are you hiding from the locals then?" Brainiac 5 asked as no one was around them.
"Not hiding, reconstituting. With my own strength, I cannot defeat this enemy, so I came here requesting an ancient power. The power of the Super Insane gods," Mon explained.
"A change in character for you?" Brainiac 5 questioned.
"Just a reevaluation of priorities. Instead of destroying entire civilizations, I have one target in mind. With great effort, I know exactly what I must do," Mon said cryptically.
"Have the Rigellians suffered enough at your hands? Why plague them further?" Brainiac 5 asked.
"You misunderstand my intentions. I intend the Rigellians no harm. They're merely bait for what is to come," Mon replied. Instantly, he teleported them both to the capital square.
Immediately, flying drones fired on Mon while ground troops rushed to engage. "It would appear they have not forgotten you," Brainiac 5 said dryly.
"You'd think they would learn their lesson," Mon said dryly as he fired on the drones with his hands. Within seconds, the drones were blasted to pieces all around them.
The ground troops were in goofy green armored outfits. Their chest armor was square-shaped, and their large craniums were covered with obnoxious helmets. They fired on Mon with their plasma rifles to no effect. Mon fired back with a shockwave blast that dropped them all. "Enough!" Mon said to the fallen soldiers.
"People of Rigel-3, in the past, I have perpetrated heinous crimes against your world and population. And...I'm not apologizing," Mon said stubbornly.
After the incident, Brainiac 5 held a meeting with the Rigel-3 Grand Commissioner. "I believe Prince Mon-El can be taken at his word that he does not intend to do the Rigellian people harm...directly."
"But can he be trusted?" the Grand Commissioner doubted.
"Probably not. No one refers to him as the Sane Jin-Saiyan," Brainiac 5 admitted.
"There is where the danger lies. Prince Mon-El has always had a complex and unstable personality," the Grand Commissioner noted.
"My best advice is not to antagonize him and scheme to get him out of your star system as soon as possible," Brainiac 5 said sincerely. "But do not count on Prince Mon-El's amiability. A simple mood shift and Rigel 3 is fucked."
"Why do you travel with the Insane Prince?" the Grand Commissioner asked Brainiac 5.
"I travel with him because our paths converge and to minimize the damage he may cause," Brainiac 5 replied.
Meanwhile, Mon was inside a forcefield under heavy guard. "He doesn't look so tough now," one soldier said of Mon. "I say kill him," another said. "No, we wait for the order," the squad leader directed.
"Bitch, please," Mon rolled his eyes and blasted them all back easily overpowering their forcefield. There was an intense firefight with Mon easily blasting all of the soldiers away and then making his way toward the Grand Commissioner and Brainiac 5.
"Escape wasn't possible without some window making?" Brainiac 5 assumed.
"Those fools really thought they had me imprisoned," Mon mocked.
"I have been analyzing Rigel-3's geopolitical status and have found several ways to improve their situation, such as addressing their genetic problem, which limited soybean production. I have also added some new safeguards to ensure better security. Much of their technology is outdated compared to their galactic neighbors. I can also improve upon the loyalty of their armed forces to the Galactic Federation and improve upon their gene pool," Brainiac 5 prattled on.
"Barney, do I look like someone who gives a shit?" Mon asked bored.
"Mon, have you ever encountered a non-lethal solution?" Brainiac 5 asked condescendingly.
"Not many," Mon scoffed.
"Well, if you wish to win hearts and minds, you might want to lower the tally of your body count on official visits," Brainiac 5 advised.
"I will give your suggestion some thought," Mon said with false sincerity.
"Rigel-18 is in desperate need of your Insane power," Brainiac 5 said urgently.
"Fine, whatever," Mon said and then teleported them both to Rigel-18.
Rigel-18
Being the eighteenth farthest planet from the sun, Rigel-18 was a cold desolate world. However, there were some massive resource-extracting orbs drilling through the crust into the magma. The orbs were similar to the Kryptonian world engines as they pulsed into the planet every so often and had tentacle nano-machines to defend them.
"I have an inkling who this belongs to," Mon said upon eying it.
"It arrived a few days ago," Brainiac 5 said.
"Well, that's a bit queer. Galactus, the devour of worlds is not known to linger over a meal," Mon said dryly. "Mere weeks ago, I would be no match. But now, I'm confident I can take him."
"Will you honor your agreement with the Rigellians to defend them as a member of the Galactic Federation?" Brainiac 5 asked.
"Yes, in so far as I'm going to fight Galactus and kill his ass," Mon confirmed. "Still, this may not be an easy task. And there's some missing intelligence here. Normally, Galactus would have devoured the world by now. There must be something in this system that he is looking for."
In space on the cloaked USS Nemo, Mon brought Imra onboard to telepathically shit-talk with Galactus. "You want me to telepathically communicate with a celestial being that eats planets and has existed prior to even the Big Bang? You're out of your fucking mind," Imra protested.
"Bitch, you better not bitch-out on this mission. The lives of millions of Riggers are at stake here," Mon told her off.
"Rigellians," Brainiac 5 corrected.
"Fuck it," Imra sighed and began the telepathic connection.
"Greetings, Son of a Bitch," Mon said via Imra's telepathy to Galactus' mind.
"Who the fuck?" Galactus wondered from the bridge of his own ship. "Prince Mon-El of the Insane." Galactus wore red and purple armor and a helmet that covered most of his face.
"I felt mind-raping you with a telepath was the most disrespectful way to get your attention. I seek to talk shit," Mon smirked.
"Indeed, you are a mischievous race," Galactus recalled. "I know what this is. You're trying to jump me."
"No, just me. I want that one-on-one," Mon clarified.
"You on drugs now or something?" Galactus asked concernedly.
"The only thing getting drugged is your ASS," Mon said confidently.
"There ain't no way you're serious, bro. You have to, at least, be talking about the big three: You, Supergirl, and Brainiac Five," Galactus assumed.
"Fuck the big three. It's just big me. I'm going to put us both on the same mental plane unless you're too afraid," Mon antagonized.
"Cretin, Galactus fears no one," Galactus agreed.
The two then appeared in a weird-ass space nebula inside their minds. "We have great matters to discuss," Mon said to Galactus as they met face-to-face.
"What the fuck do you want, Insane?" Galactus scoffed.
"The Rigellians are a member of the Galactic Federation, and I am sworn to protect them. So, how about you move out of this system before I beat your ass," Mon declared.
"The fuck you think you're talking to? Tell your subjects their world is doomed. I have given them plenty of time to flee," Galactus resisted.
"Which I interpret to mean weakness. You've gone soft, Galactus. Your weak-ass array isn't for consumption. What's taking you so long?" Mon mocked.
"You dare to question my actions! I will beat your genocidal ass, Insane," Galactus said furiously.
"You may not have heard but I'm a Super Insane god now. That means you're fucked," Mon said confidently. "My soul presently leads me a path less traveled, a path that represents a threat to you, a path where I beat the fuck out of you. Embrace me as your king and as your god. Open yourself to the possibility. Become my subject, devour of worlds."
"You must be out of your God damn mind," Galactus told him off.
As they were talking, strands shot out from Mon's fingertips as he used Imra's ability to telepathically invade Galactus' mind. In short order, Galactus became entangled in the strands. In a sudden burst of rage, Galactus shredded the telepathic strands around him. "Damnation, you sought to seduce and violate Galactus! I will kill your ass for this!
Mon's mind then returned to the USS Nemo. "Galactus was ready for my attack. He must have learned to defend his mind from other psychic attackers," Imra considered.
"Or, you suck," Mon rolled his eyes.
"Rigel-3 has been evacuated," Brainiac 5 reported.
"Whatever," Mon said disinterestedly. "The psychic attack was merely diversionary."
"Victory against Galactus can only be obtained through the archives and data. I have already planted bugs on Galactus' ship. Some very serious science is at work here. Galactus has tapped into Rigel-18's core releasing energy to his orbiting transmitter. The energy is being redirected into Rigel's sun to increase its mass and cause it to go supernova. Galactus intends to destroy the entire solar system," Brainiac 5 reported.
"But for what reason? Nourishment, sheer pleasure, madness?" Imra wondered.
"The asshole is looking to devour stars now instead of just planets," Mon figured. "I always knew this matter would have to be settled with violence!"
Mon teleported to Galactus ship as a Super Insane 4 and fired his most powerful attack at him. "Emak-emak, Ah!" Mon shouted as he fired a beam into Galactus' chest that blasted him out of his ship, had him skipping a few times along the surface of Rigel-18, and finally settling down. Galactus was now on his knees with his helmet cast off. He was bald with fiery eyes looking awfully pissed off.
"I'm going to murder that Insane monkey," Galactus pledged as he returned to his ship in giant form. He fired a beam from his hand at Mon in response. Mon put up a forcefield to resist the beam. "Impressive, never have I needed to exert myself in order to pierce a mere forcefield."
Mon was on the floor inside a crater with his clothes, fur, and skin cooked from the intense power. Mon powered down to his base form severely injured from the attack. "Just give me a moment while I become a god," Mon beseeched him.
Galactus picked Mon up by his hand. "Insane, your guile and deceptive tongue are infamous throughout the galaxy. How many have died because of your lies and dark ways? What kind of fool do you take Galactus to be?"
"No, I'm totally serious this time," Mon mocked.
"Unbelievable. Insane," Galactus said as he tossed Mon to the floor disdainfully. "I obviously overestimated you. But now I see how base you really are. You are a craven seeker of power. I devour worlds to stave off my hunger and bring balance to the universe. You're just an asshole. Already, I have waited too long. Dealing with you has depleted my vital energies. My hunger thunders its demand."
Mon audaciously touched Galactus and teleported them both off his ship onto Rigel-3 which was now a ghost-planet with everyone evacuated. Mon powered up to Insane god with red flames erupting around him. His hair and eyes became red as he transformed far beyond his previous limits. This was the power Death had given him. Galactus gave Mon an unimpressed look as he reduced his size, so they were both the same.
"I tell you now to stop, Insane," he ordered.
Mon backhanded Galactus into the air where he flipped continuously for a bit. "He is much stronger than I thought," Galactus judged. "He'll pay for this humiliation." Galactus flew at Mon and tried to punch him several times in the air missing each time. Mon flicked his fingers at Galactus' forehead sending him back down to the street. Galactus was now on the street pavement dumbfounded.
Mon teleported to Galactus' position with a smug look on his face. Enraged, Galactus punched him through a billboard and several buildings. Galactus continued the assault as he punched Mon several times in the air and then the two slammed into a mall. "What the fuck?" Galactus wondered as the two of them were covered in female clothes. The two fought in the mall gutting it and then took the fight back to the air. Galactus slammed Mon through the entire height of a building. Mon bounced off the ground and hit a fuel truck that exploded on impact. Galactus kept up the offensive with more punches. The glass of the skyscraper windows was blasted out from the impacts. Mon tried to take hold of Galactus only to get headbutted and slammed through several buildings. Galactus appeared to have the better of the fight until Mon bitch-slapped him away. The single blow sent Galactus through several buildings.
Pissed off, Galactus took hold of Mon and took him into the upper atmosphere. Galactus then threw Mon down to the ground on the other side of the planet where there was a large mountain range. "You have interfered in my affairs for the last time, Insane. Are you listening to me?" Galactus roared.
Mon answered by throwing a snowball at him. "Motherfucker," Galactus said outraged. He blasted Mon's head with beams from his eyes and punched Mon through the mountains. Galactus took hold of Mon, headbutted him, and blasted him with his eye beams. The two punched and kicked at each other with their impacts causing the mountains around them to crumble and fall. Craters appeared under their feet. Galactus fired eye beams that sliced off several mountain tops at once. The two fought evenly destroying the mountain range as they did and then Mon started taking the edge. He pummeled Galactus across the mountain range with several unanswered punches.
The two ended up across the ocean and now in a forest creating deep canyons and craters as they fought. Rock and vegetation were thrown into space from the impacts of their blows. Galactus got a solid punch on Mon's face only for Mon to smirk at him. "How is this possible? He doesn't even care?"
Galactus took Mon into space where he figured he would have the advantage. He punched Mon to the face repeatedly as he held a tight grip on him. "Now, you will see how really strong I am," Galactus taunted a wounded Mon. Galactus punched Mon hard sending him into a moon of a gas giant in the system. Mon impacted the ground hard and took a breather. He was bleeding and his clothes were torn.
Amused, Mon wiped the blood off his lip. He powered up to Super Insane god. His red flames then became cool blue ones. His hair and eyes became light blue. He was now at a totally different level than before. "Thank you. I didn't think anyone could hurt me as an Insane god," Mon said enthralled.
Frustrated, Galactus charged not noticing any difference other than a hair-color change. Mon took the fight to Galactus with devastating hits that ripped the crust off the moon and threw it into space. After a few of these hits, the moon was completely destroyed in a fireball. As Galactus sailed into the rings of the gas giant, Mon kept on him. He pummeled Galactus with a dozen punches at once. The impact of which blasted the gas away from the gas giant destroying it completely. Mon kept on Galactus punching him through one rocky planet, then another rocky planet, and then into the star.
Galactus' armor was torn in a few places, and he was bleeding from his nose and lips. Galactus momentarily concentrated on his fight. No mortal had given him so much trouble before. Mon teleported near Galactus and continued the fight. The two slammed through a nearby rocky planet causing it to explode.
"AAAAHHHH!" Galactus screamed as he fired his eye beams at Mon.
Mon gave a Galactus an uppercut so that the eye beams hit a gas giant shredding it. The gas giant became white hot and exploded. Mon slammed Galactus onto a dead rocky planet. The two punched at each other along the surface of the planet until Mon gave Galactus a good head butt. The two of them went through the planet and out the other side. Mon teleported to Galactus' position and slammed him back inside the planet. Inside the planet's core, Galactus and Mon fiercely punched at each other until the planet was completely destroyed in a fireball.
Mon pummeled Galactus across the solar system non-stop until Galactus finally recovered and did the same for Mon. Galactus twisted Mon's thumb, and Mon punched him into a crater on a planet in response. Pissed off, Galactus fixed his broken nose. He leaped off the planet destroying it in the process. Galactus and Mon met at the fist causing multiple planets to explode in the system at once.
Galactus and Mon moved their fight to other systems as Galactus tried to zap the life energy of other inhabitant planets out of desperation. Mon fired a beam on the inhabited world destroying it before Galactus could take it. Civilizations of various types were wiped away as Mon followed Galactus from system to system. "What the fuck is this?" Galactus shouted as he tried to zap a planet only to have it destroyed underneath him. Heroes of various worlds tried to intervene only to be incinerated in the battle. After one hundred and twenty-two inhabited worlds were destroyed, an exhausted Galactus fell to the ground on the last one. He was a bloody pulp with his armor severely dented up.
Mon was likewise fairly fucked up with his clothes a bloody mess. "I am the chosen one, the balance, a necessary evil," Galactus said softly.
"Yeah, I don't really give a shit about that," Mon admitted.
"There's no way an Insane could have this level of power. You must have been given assistance. Since when do the Insane accept assistance from anyone for a fight?" Galactus asked disdainfully.
"The ends justify the means," Mon said simply. "That Insane dogma is what made us predictable, weak. Only by being perfectly unpredictable can we truly be dangerous."
"Look at you, all grown up," Galactus replied sarcastically. "My hunger finally ends." Galactus then died on the spot having exerted himself too much. His flesh evaporated off his body revealing a skeleton inside his armor.
Rigel-3
The Rigellians came back to their world dismayed that their capital city and planetary system were ruined. Mon went back to visit the Angel of Death in the shrine. "Have anyone else in mind for me to kill?" Mon asked victoriously.
"There are infinite Galactus versions in infinite universes. How many of them are you willing to kill for me?" Death asked.
"Until I get bored," Mon replied.
Death smiled at that. "Very well. I shall continue to give you the power of a Super Insane god to kill Galactus versions...until I get bored with you."
"Challenge accepted," Mon smirked realizing Death would pull her power from him at any moment, even in a heated fight. "And what about the so-called balance of the universe? Isn't that what Galactus was supposed to do? Bring balance?"
"Is that what he thinks? There is no balance, merely the Creator's will," Death replied vaguely.
"Well, okay then," Mon said and then took his leave.
Over the course of the season, Mon went from one universe to another hunting down Galactus versions until he had a mountain of corpses. Only then was he finally satisfied and gave up the power of a Super Insane god.
Author's Notes: This chapter is loosely based on a Thanos 2003-2004 comic whereby Thanos and Galactus have a duel. The comic makes Thanos a weakling and a nerd but it's not entirely disrespectful. The part of the comic where Galactus and Thanos team up to fight an evil interdimensional smiley face was cut because...that was a WTF. Also based on a fight between One Punch Man and Superman that got out of hand.