Billy

ビリー

Billy and his cohort Fred used to be bullies, targeting Carlos and Rad—although Fred was largely unmotivated in this regard, Billy served as the driving force behind their antagonism. He also briefly plotted to win Alexis over romantically, but Billy's plans for this and any other short-term goals were ultimately unrealized due to the coming of the Transformers.
Billy and Fred eventually became friends with their one-time targets, in particular spending a lot of time around Carlos.