Scribble was like... a troll. and he hated music and preferred to paint. I forgot to make a lore reason for this (no, singing didn't kill his grandma).
Soul, uhhh... I forgot too. Basically a 112 year old robot (was shut down for 100 years) that was later found and adopted by Data Kiev
Switch... uhh... there's multiple versions but I'm gonna go w/ the one that was in the band. she was like super energetic n played bass