InB4 Timmy is Jake's best buddy and a replacement for Oy, then Katheryn Winnick is either Susanna (Because casting appropriate actors is so last season) or Susan (Because they don't want to make a film where two 14yo's spend a majority of the time fucking).
Seriously though, he could be a "Real World" friend, from before Jake's "drawing" that they're increasing the part of. Still seems very odd though.