Guardian Baou was a minor villain in Yu-Gi-Oh! GX. He was 1 of 5 top minions of the Supreme King and the only 1 to witness his majesty's demise.
Guardian Baou is a demonic creature who is possibly a vampire, with horns, tattoos and gems on his body.
Guardian Baou was a minion of the Supreme King. After Axel was sent to the stars destroying The Supreme King, he started to follow the former Supreme King and his company. When Jaden was all by himself, Baou found and dueled him. Cause Jaden was afraid to use fusion cause he's afraid to become the Supreme King again and was suffering from depression, Baou had the advantage. However Jaden found a way to defeat Baou without using any fusion monsters.
Guardian Baou uses a Lockdown Deck. His strongest card is the Twinheaded Beast.
- Guardian Baou lasted longest out of all of the minions of the Supreme King and was the only 1 alive once The Supreme King, Axel and Aster had fallen.