For the character's English counterpart, see Bill O'Reilly.
Guillermo Clara (portrayed by Fernando Moguel Sr.) is a guest character from Episodio 15 of the Latin American adaptation of The Wiggles Show!. He is a friend of Zoe's, who lent Clara her drum kit for personal use, subsequently lacking the kit for the Wiggles' music practice. After lending the kit to his own sister for a live concert, Clara eventually returned the drum set to Zoe, but just as the band was about to start practicing, Francisco reveals that he lent his guitar to Clara, further preventing them from rehearsing.
A running gag in reference to his surname involves someone saying "Oh, claro," and another person responding "¡No, Clara!".