What if it was like a really high health and at one point he suddenly switched to Lian in an attempt to have the party kill him by mistake, probably resulting in a oneshot
Self Sacrifice
The reason he goes wild when he takes the hit from Caliber is because it really hurt and he knew that it would have hit Lian, meaning that he could really hurt the others, so Mr's brain release a ton of adrenaline
GAMEBREAKER: DAMAGE MIX
aw guess it'll just have to be fanon
In that case, Taking a hit using self sacrifice raises attack (any raised attack from Self Sacrifice will go away if something heals him)
*Lian has a black eye forming, bloody nose, a tooth fallen out, and blood coming from his mouth (from the tooth, but Mr doesn't know this)*
Mr: "Lian.. no.. please wake up.. I didn't mean to.. please.."
the bosses are really unique
one is a crazed disco dancer who you have to attack to the beat
another is a swordsman who you have to dodge the attacks of or your entire team gets f**kin sliced
Mr: "Let. Go. Of. The. Kid."
What if at this point, it would be like a Little Mac fight but instead of you being weak, you're strong, but your enemy is much stronger."
Ah
*Mr gets a slash running across his body from taking a hit for Lian*
Mr: "....now you've done it"
*Tears off his bag mouth froths blah blah you know what happens*
i thought omori was more, like, emotions
but when a character is silenced, they get tape over their mouth and they can't preform any attacks that require them to speak (like spells)
Idea
At like the start of the fight against Caliber, Mr is calm and composed. Then he takes a hit for someone. His eyes grow bloodshot. His mouth froths. He tears of the bat to reveal the 'really angry' face. And he grows animalistic.
Lian: "..Mr..?"
*He would pretty much be a mix of tricky the clown and a rabid tiger at this point*
*Blindly swinging his sword, attempting to bite and impale Caliber*
There could be mentioned circumstances or dialogue that makes stuff happen to people
Mr would definitely try to reassure Liam but he instantly compared him to Sid the Sloth in his mind and broke out laughing
Mr: "Not to you! That think looks nothing like you! He looks like Sid the Sloth from Ice Age! He looks like a caveman! Lian, I wasn't laughing at you. You look wonderful."
I assume that people are resistant to status ailments as well as susceptible
Mr would not be shyed or frightened easily but will burn and silence easily
Burning is due to the fact that he is sensitive to heat (but not to cold, making him resistant to freezing), and silence because he talks a lot and does not like removing tape