So, I was wondering where the heck Jakob (my name for Kugelmugle) got his looks and this came to mind.

So, Elizabeta and Roderich are Jakob's parents, yes? Than how does he get his looks? Well, I believe he got his uncle Gilbert's albino gene. White hair, purple eyes, pale skin.

And don't go saying that's impossible. Gil and Rod are brothers, so the albino gene is in the family.

So, that's where Jakob gets his looks. He's an albino like Uncle Gilly.