(disclaimer: AIM judge review here! these are just my opinions and thoughts, you can take from them whatever you like! music is subjective and all that. <3)
this is so whimsical! although i haven't read the comic in question i am picking up the somewhat comical, cartoonish witchy vibe that i get from these character portraits. in a vacuum, i would say that all the pieces of this whole are a bit disparate, but in the provided context your decisions make enough sense. i like that the various sections of the piece have some of their own focuses too, like on the harp, timpani, orchestral bits, and the main kinda buzzy synth. again i don't know all the references from the description here but it's like a cute little medley!
i think you could stand to dial back the reverb on most everything here, btw, or bring it in stronger for effect in certain places or certain instruments (it does add some nice atmosphere to the synth arpeggios for instance). the reverb tail is kind of long and bleeds into some of the other parts or the following notes. a little variation in the velocities/volumes of some of the notes in the arpeggios would also be welcome to make it flow more nicely. but overall there's a lot of little detail to enjoy in this piece. i know you were going for lots of electronic sounds but i kinda wish i heard more of stuff like the xylophone! really effective at communicating the whimsy imo.