Tachyon—MCB W

Tachyon (타키온, Takion) was a Wild Cardbot, leader of the Swift Tribe, and a mother figure to the young Wild Cardbot Tachy. Tired of the war with the Metal Cardbots, she conspired with other Wild Cardbots to resurrect Tyrant Zero in order to expel the Metal Cardbots from the planet, but was thwarted by Saber Knight, who murdered her three Wild Cardbot collaborators. Then, to her horror, she watched as the three Wild Cardbots became spirits and possessed Saber Knight's body, transforming it into a berserker Wild Cardbot who fought her before killing her in front of Tachy. Sometime before the destruction of Machina, Tachyon conspired with three Wild Cardbots to sacrifice herself and revive the God of Destruction Tyrant Zero. She was stopped by the Star Guardian Saber Knight, who killed the three Wild Cardbots to save her, but was suddenly possessed by the spirits of three deceased Wild Cardbots and became an unstable Wild Cardbot himself. Tachyon was forced to confront Saber Knight, now Savannard, in a Tyrant Zero temple. Upon seeing Tachy appear, she dissuaded her from joining the fight and advised her to flee, as she was powerless against Savannard. She continued to plead with Tachy to leave, which left her vulnerable to being overpowered by Savannard and killed before Tachy's horrified eyes.

Handgun
Cheetah Fists (치타너클, Chita Neokeul): Tachyon wields a pair of gauntlets shaped like cheetah claws, formed from the front and wheels of his vehicle form. They were originally stored in the rear unit.

Gun card
Weapon Card - Sonicrunner (웨폰카드 - 소닉 러너, Wepon Kadeu - Sonikreoneo): A pair of armored, cheetah-style leg extensions. When active, the user primarily employs kicks powered by the enhanced strength of their legs; attacks that possess formidable destructive power thanks to the force generated by their acceleration.