|Real Name||Keisuke Saimon|
|Voice (Japanese)||Toru Ohkawa|
|First Appearance||Ep 10|
Keisuke Saimon (柴門 ケイスケ) is a character in the anime and manga series Battle Spirits Heroes.
He wears dark sunglasses and a black suit, as well as a black wig. Though, he's actually balding, and has grey hair on the sides of his head
He gives off the impression of being a mafia leader, with the style of his hair and the stick he carries. He prefers to be called Boss outside of school. He also sees himself as enlightened, considering Battle Spirits like a form of martial arts called Battle Spirits-do that takes self-control. And he's a very quirky type, doing strange things during battle.
Saimon is the principal of Kadode Middle School. He was formerly a teacher, and advisor of the Battle Spirits club, which Mika was a part of. He encouraged her when she was going to quit in the middle of a battle, and gave her a pair of sunglasses, which she still keeps.
He was the oldest entry in the red block of the Hero Championship. He was matched against Manabu, and defeated.
Another time, he met Hajime, who was searching for his new X-rare, The ExplosionHero Lord-Dragon-Bazzel, that blew away from him. Saimon had found the card, and gave it back to Hajime. However, he wanted Hajime to prove he was worthy for it in battle. He was defeated again, even though he used a new deck.
He first uses a purple deck, and then a blue one.
His deck has contained at some point, the following.
|The TwinPhantomDragon Sheyron||Purple||Spirit|
|The SevenShogun Desperado||Purple||Spirit|
|The Leaning Tower of Corpse||Purple||Nexus|
|The Pentagram Castle||Purple||Nexus|
|The KnightSnake Pendragon||Purple||Brave|
|Burst Wall||White||Magic (Burst)|
|Burst Draw||Red||Magic (Burst)|
|Burst Fist||Blue||Magic (Burst)|
Battle Spirits Heroes anime