VinnyO is a Japanese-American, rapper, voice actor, musician, and YouTuber. He makes his own rap battles, and has helped out with many other rap battle series. He hasn't appeared in any main battles in Epic Rap Battles of Cartoons, and it is unknown if he ever will appear in one.
- Arthur: Lost Episode (Squidward's Suicide vs Dead Bart 2)
- Finn the Human (Finn the Human vs Dipper Pines (scrapped REBOOT))
- Finn the Human (didn't record) (Cartoon Network vs Nickelodeon
- He was originally the voice of Jeff in Clarence vs Harvey Beaks, but the audio was reworked and he was replaced by MarioWorldGuy.