>>55773689I'm still figuring it out how to implement it properly, but my personal story reasons is that he got his spine severed when fighting dragon type bandits. He is a pretty powerful dark type despite his disability and can sometimes use moves like Psychic to "walk", but only for a few seconds.
He's happy enough with life, though he does have a desire to walk again and refuses to accept that what he's went through can't be fixed.
(Sorry for the crappy art, I'm not the best artist myself and can only really commission cheaper artists cause my ass is broke.)