Jax is another NPC or AI who sticks around because Cain can't control him due to faulty code or Jax's straight willpower
That'd explain his character design.
For some reason, (at least imo) Jax's character design is much more, timid, compared to the rest of the crew. He's just a humanoid bunny, whereas Ragatha is a literal rag doll, Kinger has floating hands, Zooble can be taken apart and put back together, Gangle has a mask for a head and ribbons for a body, and Caine is.... Caine. Whlie Pomni looks more humanoid than the rest of them, Episode 2 showed is that she can stretch her arms (and maybe in turn, her legs) really far. Jax is just a purple dude with long bunny ears. Weird, but not on the same level as everyone else. (Im also assuming that Kaufmo has a different body type compared to everyone else. How else would he have been able to write all across the walls.)
This theory would also explain why we haven't seen his room.
ICYMI, the Glitch store is selling pins of all of the characters. The backgrounds of which, show the character's rooms in the circus. You can see the insides of everyone's rooms except for
Caine,
Bubble,
and Jax. For some reason, we only see the door to Jax's room, as well as rips leading to the Void. ALSO, Jax's name isn't in a textbox like everyone else's. The reasoning being that he doesn't belong in the circus, and therefore isn't confined to just his room!
Hey what if instead of there being a NPC pretending to be a human in the circus, Caine's reaction to not being able to distinguish between them being bc when he mistook a player for a NPC and tried to delete them he instead abstracted them
Since he can't manipulate the human mind but he can mess w their bodies (like we saw w Pomni and Ragatha in the 1st ep), so the mind remained but the body was fucked, corrupting their code and abstracting them
I wanted to avoid saying her name until we were told what it was, but this is too much! You don't think movements here translate 1-to-1 to real life, would it? What an awful thought, haha. Even it if did, though, she'd be protected by the headset.
Tangentially, when I tried VR, I got very nauseated, very quickly. Imagine escaping this place, only to afterward be hit with a massive, probably days or weeks+, worth of accumulated VR nausea.