I guess ... the might become useful after actually maturing some? Not psycho frog please though, he's so not worth even trying. Like, I can imagine brother, prince and stupid werewolf to settle into some kind of less stupid and crazy personalities, unlike psycho frog and psycho werewolf. But at the current point in that story they're just pressed into that shape by Melissa's will, so basically they'd have to do some actual growing themselves to become halfways decent people before Melissa could get on with her own life.