

Robbie is Wendy's ex-boyfriend, and Dipper's biggest rival: he endlessly gets into fights and spits with him, usually behind Wendy's back.
He's the typical moody teenager of Gravity Falls- He has his own band, plays the guitar, and acts very condescending towards children younger to him (like Dipper). Despite this though, he does show a moderate amount of concern for Wendy, who he is anxious to win her heart, like Dipper.