I'm sorry about that but the old Kael sprite was... well, old. Had to redesign him so he fits with my actual art style. And yes i'm planning to redesign or at least make some small tweaks to Otto's sprites.
Sadly kaels old sprite is drastically better, so was Wilbert's wish they would change back. He lost that edge to him. He looks soft now, and He looks too happy. Don't know why artist keep changing their art when it was better before they changed it