Rob Erase is Willy Sketch's best friend. However, really, he doesn't do much. I invented him to be the "best friend character" in the series, but he was so uninspiring of a character that I never thought it very befitting to make him do anything except as a basically irrelevant member of ensembles.

He starred as the snowmobile driver in the Christmas Special the gang put on in Willy + Rob's Issue #5.

He was hit in the face by the No Litterin' Sign in Willy and Rob's Issue #10, triggering retaliation from the more interesting cast members Bill Pumpkin, Roscoe Sheep, and Willy Sketch.

His haircut seems to cover one of his eyes. The actual eye depends on where he's looking, as I only ever drew it on the external side of his face.

A long-running joke that hardly ever appears anywhere, and probably only existed in doodles and written documents about the characters, is that the black that is supposed to resemble is hair, covering his eye, is actually spray paint that he accidentally sprayed onto his rectangular face as a child. This is probably not true in-universe.