In-depth analysis in ascending order of ACTUAL win likelihood:
T-Count is disqualified and put to death. Eldritch Evil has no place in the arena if it's complete shit.
Orange is an orange tree, and therefore cannot move very well. And also, their meat sources are highly limitted, due to the fact that they're Jewish. No split hooves, says Leviticus? Well, that's deer-hunting out of the question, isn't it!? WHAT ARE YOU SUPPOSED TO EAT IN THE WOODS, IF NOT DEER!? The first person to find an axe can just chop her down right there at the Cornucopia where she's been planted.
Betaband is merely a hivemind comprised of fancy penguins. Yes, the penguins may be fancy, but don't let that fool you! Penguins are fucking useles in a fight, utterly slow, and they don't at all blend into the nature around them.
Seto is smol baby-man.
Crescent has all the sensory advantages of being a fox-furry, but none of the jaws or claws or speed or impeccable balance or anything that actually makes them dangerous predators. In fact, she has all the bodily disadvantages of being an anime highschool twig.
Ford is just a dude from a book, imitating the common British man. He's not very fighty, and he's not very survivey. In fact, he lacks badass to a critical degree, and you're not allowed to travel out of the timespace of the arena or bring equipment in with you, so all of his in-book abilities are useless. And you're not allowed to bring Eldritch Evil into the arena unless it's not complete shit, so his pudding is useless. His only hope is using his Lemony-Snickett-like wit and Hitchhiking skills to ride on somebody else's coattails before finding a way to betray them.
Minnieking can make puns so terrible that anyone within earshot can, and probably will, choke to death on their own blood. However, telling puns that bad will make everyone that survives hunt you down and kill you to death.
Zag is a homunculus with presumably lots of martial experience. His ability to flatter and keep a cool head will get him far, but his dreams of becoming a true hero may put him in harm's way.
Insane is the one thing everybody needs in a post-apocalyptic survival scenario: The Expert Ho. Problem is, only one person can win, so the instant she stops being a ho, people are going to try and kill her unless she finds a way to kill them first. Then again, that's what vaginal shivs are for, but does she really have the crafting abilities to make one of those?
Malkalack, being a were-capybara, has all the wilderness survival instincts that a rodent should. And, well, he at least has jaws and can swim farther/longer than some people, I guess. And smell, I guess. that's a thing animals have. And I guess he can survive better than most because he can eat raw food, remain undetected in random vegetation, and also eat that random vegetation.
Bannerlord is a medieval Bannerlord, so bows and other traditional Hunger Games Weapons are absolutely his jam. He knows the ins and outs of classical combat, and he might even know how to make his own wilderness byrnie.
Swift is a spiral knights guy, so he probably has about the same prowess as Banner, but just a little more magical, thus edging him out.
Rom is a wolf, so he has all the aforementioned benefits of being an animal! But he's also made of stone, which makes him doubly durable. Problem is, he's a lactating wolf with a compulsion to feed random human babies, so he can be easily found and led into a trap. He can't go fishing for his food, either, since he's made of marble and will sink like, well, a rock. And he doesn't have opposable thumbs, so all the killing he does has to be close range, thus putting him at risk again.
Mizal on the one hand, Mizal is a puny, wiry, knife-eared spritzer. On the other, she has a wee dragon, which, while sort of useful in itself, probably means she's got a communal thing with animals and shit, so that probably means she has a 1 in 12 chance of utterly dominating whenever the giant bees and monkey-fucks show up.
Claw is a Necromancer, or something. From what I've read of his sheets, he can raise the dead and throw ice at people I guess. And telepathize. I guess having a constant supply of meat shields is a sure way to victory.
Stryker is some sort of animu. They usually have superpowers, so he'll probably be fine I guess.
Chris is the Vault Boy, who has all of the abilities of the Fallout protagonists (Or at least their perks) exagerrated to cartoon levels of silliness. He would own at the hunger games, since, in the wasteland, the hunger games is your existence.
Sentinel is a semi-deity with centuries of experience on the frontlines of various wars. His K/D ratio is impeccable, especially considering the fact that he regenerates, so there's actually more than one death involved in that comparison. It would take beings of godlike power to banish his soul and truly kill him.
Berka is the aforementioned Penguin God with aeons of experience in combat and warfare. He knows 600 unique ways to kill a man, and that's just with a sharpened 2x4. He also is capable of using his flippers as hands, and has superpenguinly strength, thus negating the penguins' aforementioned uselessness. He also holds full commanding authority over Betaband. For whatever advantage that'll actually provide...
Endmaster is a necromancer in the classic D&D sense, so he is beyond the need for physical sustenance and can kill people by touching them. Every death plays into his hands, and he's the master and destroyer of worlds, therefore trumping all of Claw's shit.
3J is THE banisher, and one of the only Elder Mods still extant. Banning is so inherent to the core of his being that he can exile you from existence with a cross look, banhammer not needed.
Alex deactivates the arena and leaves, declaring himself the victor.
