Yule is very friendly and normally willing to help out, but also very clumsy, partly because of he is exceptionally large. Having grown up as a sort of "gentle giant" stereotype, he was bullied by his peers. The harsh treatment never damaged his positive outlook on life but he resents any mention of his size, particularly teasing.

Along with his brother Vladimir, he is a personal bodyguard for Amanda. Yule is Amanda's go-to guy for anything that she needs handled without much notice, or for any sort of heavy lifting. At Amanda's laboratory, he typically helps corral the live test subjects.

Yule and Vladimir were hired as bodyguards shortly after Amanda started heading the Marionette Project several years ago.