Buzz O!

Buzz O! (voiced by Matt Hill) is Molly's 10 year old brother and archenemy in Generation O!

Character
Buzz is a mishchevious character and the closest to an actual recurring antagonist. He constantly annoys Molly O! and plays pranks on her, like in the episode Girls Rule, Boys Drool, where he hacks into Molly's site to make her look stupid. At times, like in Buzz's Room, they can sometimes be able to work with each other, but even then it's after a lot of fighting and spats. He also thinks very highly of himself, like in Going Solo, where he plays himself up like a master bass player even though he can't play bass, and in the aforementioned Buzz's Room, he demands to be called "The Artist Formerly Known as Buzz", much to Molly's chargin.

Buzz is also prone to scamming unsuspecting people by selling fake or worthless items. For example, in Boys May Be Boys, he sells "genuine monster truck cupcaps" to the kids attending the event, while he gave Dimo and Kelp fake hall passes sometime before the episode's events, which is why they confronted him at the beginning of the episode.

Buzz can also emotionally manipulate someone to get what he wants, which is demonstrated with Going Solo, where he sadly claims that "one of them just doesn't belong" so he can join Generation O! as a bass player, and in Whatever Happened to Molly O!?, where he tries to get rich quick by seemingly buying into the rumor that Molly O! is actually a man named Melvin and claiming that he knew Molly was a fake by allegedly getting intrested in things she normally wouldn't be intrested in.

He is also shown to be rather intelligent, judging by his elaborate plan to fill all the businesses in Appleton with pigeons in You Copied, and skilled in filmmaking, with two videos, "Little Fair: The Dark Side" and "Buzz's Room's Stuff" being focused on in the episodes Bedtime Blues and Buzz's Room.