|Occupation||B-Der, One of the Four Kings of Dark Lizard|
|Japanese Voice Actor||Eiji Takemoto|
|English Voice Actor|
|“||Never forget that we're both fools who dedicated our lives to playing B-Daman. Therefore, we both should be devoid of hatred no matter what the outcome of the battle is.||”|
—Daizou to Hitto Tamaga (episode 35)
Daizou is a tall man with an imposing stature. He has orange hair, orange eyes and a stubble. He wears a ship captain's hat in his head, the teal blue and white outfit of the Dark Lizards and teal blue pants.
Daizou is a grown man who takes B-Daman and destruction as if it were a serious business. Of all the members of the Dark Lizard, he is the most reckless despite being the eldest. However, despite that, Daizou has a strong sense of honor and a man of principle.
He is sometimes heard singing a short song about his life (which was heard playing during his debut and his death):
To saa no kochi no Harima ya bashi de
On san kanzashi kau mitta
You saa koi you saa koi
It was implied that Daizou died during his final battle against Hitto Tamaga (in Episode 35) but not before he told Hitto the whereabouts of the boy's father. His death caused Hitto to curse his victory as the champion of the World Grand Prix.
- "From the bridge, I saw that boy with a hairpin buying plants that day. So come one, come all." (Song, Episode 15)
- "Dark Lizard Elite, Daizou Ohka, at your service." (Self Introduction, Episode 15)
- "Rules? The rules are meant to be broken!" (to Hitto and friends, Episode 15)
- "If you know how to listen then YOU BETTER ANSWER RIGHT NOW! Annoying little brat!!" (to Kodoh, Episode 17)
- "Never forget that we're both fools who dedicated our lives to playing B-Daman. Therefore, we both should be devoid of hatred no matter what the outcome of the battle is." (to Hitto, Episode 35)
- He is similar in certain respects to Super B-Daman character Madoka Daisaku, in terms of being a grown-up who plays B-Daman, and treats it like a serious business, but unlike Madoka, Daizou is not a B-Daman Hunter.