Idea
In FNAF world, in order to keep yourself by being oneshotted by Scott Cawthon, you had to do a side quest to unlock some kind of booster that annulled the attack
What if there was something similar??
at the beginning, he sheathes his swords and says "Fights are no fun when they're over in a second. But I don't need my blades to make this battle a living hell."
Mr's face throughout the journey would be the black spiky one, which serves as a melee weapon in two ways
The spikes can extend and are sharp
The black spiky face also has large mouths that can be used for biting
The creepy eyes can serve as intimidation
Ah
His dad got it from college
Also Mr and Sir's parents are named
Sr and Mrs
Sr is short for Mr Senior (Im not actually named after my dad I just thought it'd be interesting) and he likes calling Mr "Junior"
Sr wears a bucket on his head and Mrs wears a box