Superhero cartoon about a boy who is a healer?
Curt Cure, starring a boy named Kurt Heiler who desperately wants to be a bust 'em up powerhouse type hero but has been accidentally infused with a health restoring mutant gene. (Accident being the type of mutant gene, he totally meant to steal a mutant gene regardless, he just really wanted super strength or laser beams) Obviously he wasn't accepted into the hero association as a big fighter, only being taken into the health department as a trainee, someone who never gets to go out to fight on the field. As an act of rebellion, he recruits a few other heroes with "lame powers," and they start their own hero group. A new villain with undead necromancy powers eventually turns up, and Curt Cure will be revealed to be one of the only ones who has a power that has a negative effect on the undead army. (Pathfinder logic, negative undead gets hurt by positive healing powers)
@yukii0nna , if you wanna come up with the 3 other members of Curt Cure's hero team for this boy show, the floor is yours XD