Guilherme Arnoldston

Not to be confused with Gustavo's 2nd older brother.
Guilherme is a background character in Gustavo. He is (or at least, was) Gustavo's rival from 6th to 9th grade, and also is a bully, that is until got beaten by Gustavo in the episode, The Summer Tests. 
Category:Characters
Category:Male
Category:G
Category:Gustavo characters
Category:Human