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The Black Fang (ブラックファング, Burakku Fangu) is a motorbike designed by BOARD, which was later stolen by Shinmei, the Wolf Undead, where it became his personal machine used to augment his own abilities.
History[]

The Black Fang in development.
Designated the "ultimate machine" by Kei Karasuma, and based on the technology used by the Blue Spader and Red Rhombus, the Black Fang was developed as a next-generation vehicle meant to be the successor of the former two bikes. However, BOARD's headquarters were destroyed while the vehicle was still in its developmental stage.

Tachibana riding the prototype.
The prototype vehicle was later stolen by Shinmei, who used it to masquerade as the leader of a group of "Undead Hunters". Catching the attention of Kazuma Kenzaki and Sakuya Tachibana, he sought the two's cooperation to complete the vehicle, by adding the Rouzer system using data referenced from the two's respective Rider machines. Seeing it as a chance to restore BOARD, Kenzaki and Tachibana agreed to work together with Shinmei's group. Tachibana was given a chance to test out the prototype Black Fang, and he was impressed with its performance.
Once the Black Fang was completed, however, Shinmei transformed into his Undead form and stole the bike, using the bike's newly-added Rouzer system to boost his own powers, whilst simultaneously imbuing the bike with his own elements and abilities, transforming the bike into a feral state for his personal use. After his identity and true motives were ousted by Tachibana, Shinmei attacked Kenzaki and took off with the machine.
Racing onto a race track circuit, Shinmei used the Black Fang's new abilities to shake off the bike racers on the track, with Blade and Garren in pursuit. Black Fang's powers proved effective at slowing down the two Riders, though a hint from biker Tatsuya Yamaguchi proved effective at allowing Blade to bypass Black Fang's abilities and catch up with the Undead, eventually overtaking him and knocking him away from the bike.

Black Fang destroyed.
After the Wolf Undead's defeat, Tachibana fired a shot from the Garren Rouzer, destroying the Black Fang. Tachibana and Kenzaki watched the bike go up in flames, finally recognizing that BOARD could no longer be restored to its former glory.
Powers and Abilities[]
- Speed: In its prototype state, the Black Fang already boasted an impressive top speed, being able to surpass even the standard Rider Machines produced by BOARD.
- Rouzer System: The Black Fang was completed by adding a Rouzer system based on the ones used by the Blue Spader and Red Rhombus. When the Wolf Undead seized control of the machine, he utilized the system to imbue the machine with his own Undead abilities, transforming the machine into a feral state. He is then able to use the following powers using the Black Fang:
- Forcefield: Shinmei can generate a green energy forcefield around himself while riding to protect himself from enemy attacks.
- Shockwave: Shinmei can produce an immense shockwave from the Black Fang to slow down and shake off any other vehicles in the vicinity. However, if another bike rider gets close enough behind him, the resulting slipstream produced is able to bypass the shockwave.
- Smoke Trail: As a last resort, the Black Fang can produce a heavy smoke trail to obscure the vision of any riders that are close behind him.
Notes[]

Concept art
- In concept art, the Black Fang was originally named the Undead Fang.
- It was not stated which Rider would have been the potential user of the Black Fang, had it been completed prior to BOARD's destruction.
Appearances[]
Kamen Rider Blade
- Episode 24: Mysterious Hunters
- Episode 25: A Traitor's Sprint