I will have to say the character was mostly inspired by Apple Boy but I do think Kat is more developed because helping the player can be variable, with the Apple Boy he can feel OP at times, and about the comic, I know Appeentice Monkey and Quivoq aren't the same, but due to Apprentice M. Appearing in ONE game he's basically forgotten
Oh, I also found the sketches for Kats prototype:
