|This article is about a/an organization in Kamen Rider Blade.|
Short for the Board of Archaeological Research Department (人類基盤史研究所 Jinrui Kiban-shi Kenkyūjo), BOARD (ボード Bōdo), the organization higher-ups's motive was to unleash the sealed Undead Cards.
- Main article: Hiroshi Tennoji
Hiroshi Tennoji (天王路 博史 Ten'nōji Hiroshi) was the chairman of BOARD who intentionally set up the series of events in the fake Battle Fight and the creation of the Category Ace Kerberos, so that he could have his warped dream of a new world order with himself as its ruler. In the end, he was murdered by the Giraffa Undead after he was defeated by the Riders with his dreams shattered.
- Main article: Sakuya Tachibana
In an alternate reality, Kamen Rider Blade: Missing Ace, both Tachibana and Karasuma decides to keep all of the Rouse Cards away, when the Albino Joker attacked and killed Karasuma, then unsealed the Undead. Ever since the threat, he took over the organization and becomes the chairman while he hires Junichi Shimura, along with Natsumi Miwa and Shin Magaki as the new members to reseal the Undeads as he can't rehire Kazuma and Mutsuki due to the fact that some of the unsealed Undeads are Category Ace of Spades and Category Ace of Clubs.
- Main article: Kei Karasuma
Kei Karasuma (烏丸 啓 Karasuma Kei) is the President of BOARD. A 48-year-old professor who created the Rider systems 01 and 02 (Garren and Blade), as well as the Leangle System (03), while he was under control of Isaka. During his travels, he befriends Noboru Shima, whom he entrusted the Rouse Absorbers to despite knowing he was an Undead. He is also aware of the side effect of Kenzaki's King Form as well as Tennoji's plans of the fake Battle Fight. In an alternate timeline, he and Tachibana tried to hide the 52 Rouse Cards, when the Albino Joker appeared and attacked and killed Karasuma, then unsealed the Undead.
- Main article: Yoshito Hirose
Yoshito Hirose (広瀬 義人 Hirose Yoshito) is Shiori's father, the one responsible for breaking the Undead's seal in a fit of madness, dying in the process. He created the Trial-series Undead Trial B in his image to protect Shiori, possessing all his creator's memories. However, Trial B was reprogrammed by Tennōji to continue to monitor the fixed Undead battle and remove potential threats before he sacrifices to protect Shiori from Trial G.
- Main article: Shiori Hirose
Shiori Hirose is a twenty-year-old woman, whom is one of the few remaining BOARD members after it was attacked by the released Undead. She helped the Riders by detecting the Undead on her Undead-searching computer.
World of Blade
In the alternate reality World of Blade, the Riders are high rank employees of the BOARD Corporation (株式会社BOARD Kabushikigaisha Bōdo), and are effectively "Kamen Rider Salarymen" (仮面ライダーサラリーマン Kamen Raidā Sararīman), whose job it is to combat the Undead once receiving clearance to use Rouzers. In BOARD, there is a ranking system with Ace at the top followed by King, Queen, Jack, and then the Numbers, with Two at the bottom. The backdrop used to arrive in this world shows a hand of facedown Rouse Cards with the Ace of Spades Change Beetle card faced up. Within this A.R. World, Tsukasa assumes the role of chief waiter within BOARD and is given the ability to completely destroy Undead without sealing them.
Super Hero Taisen GP
At the end of the film, car racer Kyoichiro Kuroi, whom was the Shocker Cyborg Kamen Rider 3 in the altered timeline, had BOARD as one of his sponsors, with said emblem visible on his racing suit.