It's all in comments of course, ask anything additional about his lore you want, and I'll try to answer!

New lore n' fun facts:

BossfightsX is a bit different from normal X personality-wise, growing differently due to his attachment to Bossfights instead of Sonic. BossfightsX loves to fight rather than to hunt. He wants to feel the rush of heated battle and see how humans resist and break in different ways when pushed to their absolute limit.

Pearlfan's vessel is now Rea to match with Shiver's vessel being Xander, and also make another part of the lore more impactful, that being...

Pearlfan has been erased. X found Shiver and Pearlfan boring as they refused to engage in any conflict for the sake of not wanting to be separated from the other, and X wanted to spite Shiver for being too afraid to give him a good fight and make him angry so that he would want to get revenge.

Faker/EXE is canon. His vessel is Edgyhead, and he has the same general set of powers as his vessel. He still hates X, but also equally hates the users of bossfights, as his vessel comes from their creations.

My vessel is now Eggyhead... or is it? The souls of BossfightsX's world truly don't know if the person resembling Eggyhead is actually really my soul trapped in a vessel of Eggy, or BossfightsX using that as a lie to get them to trust him so that he can break it.

Some vessel/soul stuff:

Vessels in general are more powerful, and X's vessel is weaker, as this version of X wants a good fight moreso than to chase or torture, though he does take pleasure in those as well. X is still in control and could change this at a whim, but doesn't because of his desire for a battle rather than a hunt.

X's favorite soul is Simon (Evil-ish), both for his general fighting spirit as well as his role in spawning bossfights as a whole. His vessel is Collector, and is the strongest of the vessels of the trapped souls.

X builds vessels to make them suited to how he thinks the corresponding user of Bossfights would fight best in. He wants them to be strong and accustomed to their vessels so they can fight the best they can.

Australia man not here cause he'd be too strong to be control 🥀

TheOneToBlame would probably be put into Theo

I might be able to divine intervention a victory

You. Little. Bitch. Curse you BossfightsX! I will make sure that the day I get my hands on you is the day you will suffer the most!

BossfightsX: YES. HATE ME.
WANT ME DEAD.

THAT WILL MAKE THIS SO MUCH MORE INTERESTING.

Ah Feck im dead

I will avenge you my love

Bleehh dead

I won’t let this happen again. It won’t let me live. It won’t let me DIE. It wants me to suffer. I’LL MAKE IT SUFFER AND IT WILL NEVER SEE THE LIGHT OF ITS SCOFFED DAY AGAIN!

Bleeeh

Don’t go on me! DON’T LEAVE ME.

Bleh *ded*

*Fist punch the ground*
NOOOOOOOO! Nooooooooo! YOU BASTARD (Bossfights)X!

XP

why does this comment remind me of this?

Well this is an interesting predicament

guess im Theo in that case