A/N: Disclaimer, this fanfic spoils the plot for Final Fantasy IX, as well as certain aspects of Doom 2016 and Doom Eternal.
Sentinel Prime Outskirts, Argent D'Nur
Late Afternoon
Argent D'Nur was a vast terrestrial world. Its mountainous, craggy landscape was sprawling with conifer trees. A large, red moon was seen in the planet's greenish-blue sky. The wilderness of D'Nur was broken up by enormous High Gothic style, fortress-like cities, built by its proud warrior natives, the Argenta. One of these cities was Sentinel Prime, renowned for its gladiatorial matches and being the prime source for D'Nur's army. Under the leadership of the Maykr race and Order Deag and the protection of the Night Sentinels, the Argenta have stood proudly for Millennia.
However, Argent D'Nur would be receiving a new visitor.
In a valley along Sentinel Prime's outskirts, a flash of dark blue light lit up the night. As it faded, it revealed a slender, anthropomorphic rat woman, who wore a long, tattered red coat over battle armor and orange cloth trousers, along with a pointed red hat with decorative metallic wings. This woman was none other than Freya Crescent, proud Dragon Knight of Burmecia. She groaned in pain as she dropped to her knees, clutching onto her spear for support. As her vision returned, she looked down to find a massive bloody gash in her left side, throbbing in pain. A single strand of crimson blood slid down from her gashed right eyebrow, down her cheek, and onto the soil beneath her.
It didn't make sense to her. One minute, she was fighting for her life alongside her allies against an otherworldly being summoned by despair and hatred. Now, she was alone, badly wounded, and stranded in an unfamiliar location. At first, she thought she was back on Gaia, and that the city just ahead was Treno, where she could receive assistance.
However, as she looked to the sky, she noticed there was only one moon, and the city ahead was definitely not Treno. In fact, the landscape around her did not resemble anywhere on Gaia.
"Zidane?!" Freya shouts out. "Eiko?! Steiner?! Vivi?! Anyone!?"
At first, there was no response, which bothered Freya as the pain was getting worse and she had no potions on her. Fortunately, her pleads were answered by two tall men who were approaching from her left. Though they resembled knights with their plate armor and spears, their armor was sleeker and had neon blue lights and visors, with the tips of their spears energized with the same color.
They quickly made their way down to her, just as Freya lost her grip on the spear and fell over. One of the knights caught her and began speaking to her. However, her hearing was beginning to fade. She groans, "I...I'm sorry...I can't...understand..." Those were the only words she was able to get out, as her vision faded.
/
The Night Sentinel holding Freya began to check for a pulse. He looks back to his partner. "She's alive, but barely. We need to get her aboard the shuttle. Here, give me a hand."
The other sentinel nods and walks forward, helping the unconscious woman up as the two carried her up the hill. "Where did she even come from? There's no way she could've gotten past the watch posts without the sentries knowing."
"I don't know." The first one replies as they board a sleek Night Sentinel Gunship. "But we'll never find out if she dies on us. Set course for the clinic. The Sages should be able to heal her."
"And then what are we going to do with her?"
The first sentinel looks down at Freya and sighs, "Nothing. She is an outlander. Her fate lies in the hands of the Order Deag."
/
Sage's Clinic, Sentinel Prime
An hour later
Blue flames lit the castle-like room of the Clinic as Argenta Sages, human-like doctors in long white cloaks, began to mend the wounds of the Burmecian Dragoon. One of the Sentinels from earlier was standing guard, curiously overlooking the surgical process.
One of the Sages walks towards him. "She is stable. Her physiology is surprisingly similar to that of the Argenta. She will survive. She is fortunate that you found her when you did."
"Good. Were you able to learn anything else about her?"
The Sage walks over to a table, where Freya's coat, hat, pieces of her armor, and spear were arranged. "Judging by her out, she is most likely a warrior from her home, wherever that may be. A fearsome one, too, considering the scent of blood that follows her, and the gore that stains her attire seems not entirely of her own."
The Sentinel looks over the armor and picks up the spear. It seemed similar to the ones the Night Sentinels used, but more primitive and traditional. Back on the medical bed, Freya groaned softly as she awoke, her eyes opening. She sat up, looking up to spot the Sage and Sentinel. "Where...where am I?"
"Easy." the Sage assures. "You are at the Sage's Clinic within Sentinel Prime, on Argent D'Nur, in case you were wondering."
"Ar...Argent D'Nur?" Freya inquired. "How did I get here? Where are my allies?! I need to get back to Gaia!"
The Sentinel sighs, "With all due respect, we don't even know how you got here. Even if we had the means to send you back, we cannot do anything without the word of the Order Deag."
"And what is the Deag?"
"They are the High Priests of Argent D'Nur." The Sentinel replies. "Any Outlanders who set foot on our world are to be judged by them."
"If that is the case, then I wish to speak with these Deag." Freya declares.
The Second Sentinel walks in. "You're in luck, then." He turns towards his companion. "Deags Ranak and Nilox wish to meet with her in the antechamber."
"Of course." The first replies as the two march over to the bed. Freya wanted get up herself, but her legs still ached from the wounds she suffered. The Sentinels grabbed one of her arms each and began to drag her out of the Clinic.
/
The disc-like elevator lowered into a large antechamber, eventually coming to a halt with a loud thump. The Sentinels drag Freya off of it and began to make their way down the hall. Freya had stopped struggling by then. Looking up, she saw a pair of slim Argenta men. One of them had a helmet with a crest on it that covered his eyes and the other had a crown on his head. Both of them wore long lower robes and held specters in hand. These two men were the Deags, the helmeted one being Ranak and the crowned one being Nilox.
"We found her in the valley, just outside the castle walls." one of the Sentinels states as they set her down in front of the priests. "She was badly wounded, and wearing this."
The Sentinel hands Freya's hat over to Ranak, who stared at it, clearly intrigued by the Outlander's attire.
Freya looks up. "I...do not know who you think you are, but I demand you release me this instant!"
Ranak looks back towards Nilox. "She has fight in her yet..."
"...in spite of her injuries." Nilox replies
"Send her to the Arena." Ranak orders as he hands the hat back to the Sentinel. "Let her be judged like the others."
Freya glared right at Ranak. "Arena?! I am Freya Crescent, proud Dragon Knight of Burmecia! I will not be sent to die in a gladiator pit like some-!"
She was interrupted as the two Sentinels grabbed her and hauled her back towards the lift. Freya struggled, but she did not have the strength to pry herself out of their grasp.
Nilox clicks his tongue. "A feisty one, that Freya, yes? She'll make a fine addition to the arena."
"That is, if she has the skills to support her claim." Ranak replies. "She may even attract the attention of the Maykrs."
"We shall see, Ranak..."
/
A/N: Heya, guys. Brayden here. I've been in a bit of a Doom phase for the past couple of weeks and I love the games. And I kinda got an idea for a Doom/Final Fantasy IX crossover based off of the Doom Slayer's history in the reboot games. The premise is pretty simple: Freya Crescent, at the end of FFIX, is accidently transported to Argent D'Nur after her fight with Necron and takes the place of the Doomguy. Now, I'm not gonna get right into the demon slaying just yet, but we'll get there soon enough. Overall, I hope you guys are enjoying this so far and I'd be more than happy to address any questions you have! ^^