Rainer is the same kind of immortal as Marceline btw. He can be killed, but doesn't age.

Also, THERE MIGHT BE SOME BIG SPOILERS FOR EPISODE 4 OF THE SHOW IN THIS CHAPTER SO WATCH EPISODE 4 FIRST.

Also, sorta attempted suicide so be warned of that.

Enjoy.

xxxxXxxxx

In a forest in Ooo.

Rainer groaned as he woke up clutching his own head. He looked all around him in confusion to see lush greenery. His tail flapped about anxiously as Rainer remembered what happened.

He died, was sent to the multiverse of Adventure Time, became a werewolf because of some cosmic wolf and that same wolf sent him here telling him to win. It all sounded so insane.

Rainer frowned dejectedly as he curled into a ball. He couldn't mentally keep up with everything that had happened so quickly and so he decided to shut everything out for a moment to collect himself. That seemed to be rather difficult as his new werewolf senses were too sharp. The smell of flowers miles away made itself clear and the sounds of conversations seeped into his ears. He tried to curl more to avoid his overwhelmed senses, trying to just be a little more invisible. Just a little more tiny.

Suddenly, Rainer vision became off. The ground was way too close and everything was much bigger. Rainer panicked before noticing that he had paws, a wolf nose and was standing on four legs.

Rainer noticed a puddle nearby and ran towards it on all fours, tripping and falling just at its edge. Seeing his reflection in the water gave him everything he needed to know.

He had transformed into a tiny white furred wolf. Anyone seeing him could mistake him for a wild animal. At any other time and place, Rainer would've appreciated the ability to become tiny and disappear. But not in Ooo and right now.

A large three headed snake suddenly appeared from nowhere and towered over him with a hungry expression. Rainer froze in fear upon seeing this snake.

This is it, huh? Thought Rainer as his heart started beating slower and slower as he calmly accepted his end. Maybe this time it'll really be the end.

Suddenly, a familiar word entered his mind viciously. "Win", the word echoed through his mind. A desire and survival for victory spread across his body.

Leave me alone! I just want it to end! Thought Rainer, fighting back against his werewolf instincts angrily. I'm not a winner! I've never won anything in my life! I'm not gonna start now!

As Rainer closed his eyes and fought against his own mind, the three headed snake took up the offer of a free meal and swallowed the werewolf alive.

Meanwhile, Rainer continued to fight with his werewolf instincts. He wanted to overpower it, to be bigger than it.

And his body heard the call as it grew massively, tearing the snake apart from the inside, killing it. When Rainer opened his eyes he noticed he was not inside the snake and was still a white furred wolf on all fours, but now he was able to clearly see the tops of the trees around him. He became gigantic. Rainer mentally sighed as he realized he won, in more ways than he had wanted.

I wanna be my normal size, he thought tiredly trying to get back into his normal body before his body shrunk down to normal size. And have hands again.

His body, taking the orders literally, quickly transformed into what one would really call a werewolf. Large bipedal frame with large muscles, claws, a wolf's nose and mouth, completely red eyes with no pupils and white fur. He looked like a monster.

Closest thing to human, please. Rainer thought in a desperate and defeated tone before his body turned back to what it was before he turned into a tiny wolf. Even his royal looking clothes and cloak that had disappeared when he transformed were still there.

Rainer saw this and walked to a tree before slamming his forehead into it. The headbutt nearly broke the tree and didn't even tickle him, but all Rainer did when he saw that was sigh. He was tired.

Suddenly, he heard a thud come from behind him. He turned around to see the drawing tablet and stylus that he got from that mirror room with the wolf. He picked them up with a frown before turning back to the tree with a defeated expression as his arms went limp.

He reared his head to headbutt the tree once again, but as he was about to hit the tree he was teleported away by someone.

All he saw was yellow before his head met something very tough with great force. This time, his head did hurt a little upon impact and he felt the whole area shake violently for a second but his feet were more than capable of taking it.

"Woah...Werewolf Prince!" Rainer heard a voice from behind him. He turned around to see a tired Prismo, a depressed Simon, a starry eyed Fionna and cautious Cake all in the same room. Prismo's time room.

Fionna, Cake and Simon were all either on the floor or were hanging onto the pool in the room. Rainer turned to the wall he had just headbutted to see a large crater. He seemed to have shook the place too much.

"So, you're the new guy." Said Prismo calmly in an exhausted tone as he fixed the wall magically. "Welcome aboard."

Rainer could only squint in confusion at what Prismo had said, prompting the wish master to explain.

"You're now one of the avatars of the spirit of victory, ambition, determination, perseverance, etc. We just call him Vic for short. He's a cool guy, just gets really competitive." Said Prismo calmly with a shrug. "You might be wondering what you're doing here."

Rainer nodded slowly as he noted who that cosmic wolf was, causing Prismo to take a deep breath.

"First, do you know who I am?" Asked Prismo calmly, causing Rainer to nod and sign the words 'Prismo the wish master' to him. "Good, that makes things easier. Y'know how I sometimes make universes from the wishes I grant? One of Vic's hobbies is to scour the resulting multiverse for a universe he likes enough to give an avatar of his."

"Does Ooo have one?" Asked Fionna curiously with a smile.

"Yeah, Werewolf Queen." Replied Prismo calmly before turning to Rainer who was signing the words 'Why me?'. "it's always you...or Werewolf Queen. You're an alternate version of her. Even down to THAT place where you come from." He said before using his remote to show scenes of Werewolf Queen in Ooo. She looked like him. She even wore clothes similar to what he was currently wearing except they were red instead of black. Almost as if she was doing a wolf Red Riding Hood cosplay.

Rainer froze. He didn't know how to react to this information. He had alternate versions? No, HE was the alternate versions. Was HE the Fionna and Cake version? How insignificant can he really get? He's the genderswap of a character that never even appears.

"Anyway, one time I decided to make a universe for myself, which isn't allowed. That's where these two are from." He continued pointing towards Fionna and Cake.

So Prismo made Fionna and Cake? Thought Rainer in surprise before the wish master continued.

"Vic found this universe and promised not to snitch as long as I let him put an avatar in." Continued Prismo calmly. "Buuut he took too long bringing you in and...stuff happened so you were sent to Ooo instead and now you're here. You're the Werewolf King."

"No." Said Fionna with sparkling eyes. "Werewolf Prince."

"King. He's-"

"PRINCE! It's always Werewolf Prince"

"...meh, as long as he's fine with it." Replied Prismo with a shrug before turning to Rainer to see his reply.

Rainer's shoulders dropped before he signed something to Prismo that caused the wishmaster to wince heavily.

"I don't know what that means, but I'll take it as a yes!" Exclaimed Fionna cheerfully with a smile.

"Welcome to the club, Prince." Replied Simon, who was wearing ice king clothes and was sitting next to Prismo's small pool, in a grumpy tone as he held up a can of soda for Rainer.

Rainer walked to Simon and took the can of soda before drinking the whole thing and starting to eat the can. His werewolf teeth proved more than adequate in crunching down on the soda can. It was as if he was eating a cucumber.

"I don't think he was agreeing with you, Fionna." Said Cake the cat staring at Rainer eating a metal can like a cucumber tiredly.

"So all of this is pretty bad, but I think we're all gonna be okay." Said Prismo calmly. "As long as no one else knows."

As if on cue, a knock on Prismo's time room was heard and Prismo started to panic. "Oh no! Quick! Down the stairs!" He whispered to everyone.

By this time, Rainer was munching on his third soda can, not listening to anything around him as his head was mostly submerged into Prismo's pool.

He felt a tug on his body that he resisted before he heard something about being fine. Then HE appeared.

Rainer got out of the pool as he noticed someone in red armour wearing a tie.

"Scarab!" Exclaimed Prismo cheerfully, trying to hide his nervousness in front of the red armoured guy.

Rainer covered his ears, not wanting to deal with or hear anything. After a while, he was suddenly picked up by someone.

"And who's this?" Asked Scarab calmly as he narrowed his eyes at Rainer who he was holding in his hand by the scruff of the neck.

"He's one of Vic's!" Said Prismo with a nervous smile. "You don't wanna touch one of Vic's, do you? They can be pretty vicious."

"Don't worry, I keep a bit of silver on me. But Victory's, huh? Then why does he look so... defeated?" Asked Scarab narrowing his eyes at Prismo. "For someone who howls determination and drive into the multiverse, you'd expect his avatars to be more active."

Prismo chuckled nervously. "He's a newbie. Still hasn't worked some stuff out." He said with a nervous smile.

Scarab paused menacingly before putting Rainer back on the floor. At this point, Rainer had lost all context on the situation. He was just done with everything.

At some point, Scarab had decided to take Rainer with him deep into Prismo's cube. It was an uninteresting trip. Or perhaps that was just Rainer pushing everything out out of his brain. He didn't know.

But once they reached Prismo's pickle storage room, things started going south.

"This is the last time I make an unauthorized universe." Said Prismo dejectedly, speaking through one of his other selves.

"Unauthorized universe?" Asked Scarab in a menacing tone.

"Crap." Said Prismo realizing he messed up as Scarab approached him menacingly. "Uhh, c'mon, Scrabby. Let's make a deal. I can get you anything you want. A new ride, a-"

Scarab cut Prismo off by throwing a jar of pickles onto the floor, breaking it.

"Aah! Not my hot and spicy!" Exclaimed Prismo as he stared at his ruined pickles.

"You just handed me the only thing I wanted." Said Scarab happily before pausing.

"My pickles?" Asked Prismo in confusion.

"THE TIME ROOM!" Yelled Scarab. "I should have been wish master and I WILL be! All I have to do is turn in your rouge universe to prove you're unworthy. And I might take a jab at that arrogant wolf. That avatar is for the unauthorized universe, isn't he?"

Rainer's ears perked as he heard mention of himself by Scarab. He started paying attention to the conversation again. He had nothing else to do anyways.

"Psh, what am I worried about. You'll never find him." Said Prismo acting calm as he crossed his arms.

"So it's hidden in a person." Said Scarab almost smiling under his helmet as Prismo repeat the word crap twice. "He's here, isn't he?"

"No." Said Prismo trying to act calm before shutting all doors and passageways and disappearing.

Sadly, in his panic, he forgot to take Rainer with him. Scarab noticed this and turned to the werewolf.

"Pathetic. I'll egg you later." Said Scarab as held Rainer by the scruff of the neck. "Now let's go find those crossovers."

Scarab quickly used his green staff to blast his way through the time room. Wall by wall Scarab made his way forwards towards Fionna, Cake, Simon and Prismo and he showed no signs of stopping.

And Rainer showed no sign of resistance. What will Scarab do to him? Kill him? He'd be glad. Put him in a prison for all eternity? It wouldn't change his life one bit. So all he did was NOTHING.

Soon enough, Scarab blew the final wall to reveal Fionna and Cake right in front of Scarab.

"Found you." He said before turning to Fionna and Cake and dropping Rainer. "Ah, the crossovers. You're evidence. You're getting egged too and after that, to the incinerator with the rest of the trash like him."

Scarab finished his speech by kicking Rainer towards Fionna and Cake.

"Werewolf Prince!" Exclaimed Fionna in worry.

"Sad, really. He didn't even try to fight. An avatar of victory? More like a useless idiot," said Scarab calmly, causing Rainer's eyes to get wider with every insult. "A source of shame,...an EMBARRASSMENT."

Suddenly, an old memory played inside Rainer's mind as the conversation in the time room continued. A flashback to a harsher time.

xxxxXxxxx

A 9 year old Rainer stood in front of his mother with a highly reddened left cheek

"A B?! What are you, A useless idiot? Are you trying to bring us shame after raising you?! Why can't you be like your siblings? All of them are working hard for their futures while you're acting all lazy with those stupid drawings that won't get you anywhere." Yelled his mom angrily.

"I'm- I'm doing-" said Rainer staring at the floor in shame.

"Did you just talk back to me?!" Snapped his mother angrily.

"No! I didn't mean to. I just- I'm sorry!" Rainer said quickly in a panic.

"No, I want you to say it! I wanna know what lazy excuse you have to your LOUSY GRADES, you embarrassment!"

Tears formed around Rainer's eyes as he struggled to speak. "I'm- *sob* I'm-"

xxxxXxxxx

In the time room.

"No!" Exclaimed Prismo with a determined expression. "They're Fionna and Cake and they go wherever they want."

Prismo's remote magically fell into Fionna's hands from nowhere before Prismo turned to Scarab, but before he could say or do anything he saw Rainer holding Scarab's arm that held his weapon. No one had seen Rainer move so everyone was surprised.

Rainer paused as he glared at Scarab with pupilless red eyes filled with tears. A lifetime's worth of pent up negative emotions amplified by werewolf instincts suddenly exploded all at once and their target was Scarab. "I'M DOING MY BEST, OKAY?!" The werewolf screamed in fury and rage before slamming Scarab into a wall, causing a crater to form.

Without missing a beat, Rainer transformed into his bipedal monster werewolf form and punching Scarab in the gut causing the crater to her bigger.

Scarab quickly jumped away before Rainer could land another attack. Scarab launched a blast of energy towards Rainer, but the werewolf dodged by transforming into a tiny wolf before jumping at Scarab's face and becoming a giant wolf and biting Scarab's head before shaking him around, slamming him into any wall as he tried to crush his head. Scarab's head proved too tough to be crushed, however.

So Rainer threw Scarab away before transforming into his monster werewolf form and jumping onto the god auditor and using his arms like clubs, slamming them against Scarab rapidly.

Everyone in the room felt a ray of hope. This could end now. But Scarab had a trick up his sleeves. He pulled out a short metal rod that could fit in a pocket and stabbed it through Rainer's right palm.

The effects were immediate as the staff burned through Rainer's flesh like a hot knife through butter. The werewolf screamed in pain and transformed back into his human looking werewolf form.

He couldn't hear anything as he fell onto his back and held his hand which now had a hole in its palm. He could barely hear anything as pain assaulted his senses. Only a few words like "Silver", "polar bear" and "hold on tight" made it to his mind as he writhed in pain.

He couldn't even notice Fionna using Prismo's remote to send herself, him, Cake and Simon to another world.

xxXxx

Fun fact, Vic's howls are my fan adventure time explanation for why you suddenly get the urge to fix your whole life at three am.

Also, hope I did that trauma right.

The metal rod that defeated Rainer wasn't magic. it was just made of silver.

To Rainer, silver is like if you combined the sun and wooden stakes into one for Marceline. Kills and burns.

Tell me how I did. Leave a review.

Toodles.