Fusion is an Aquos/Ventus Duomechtra.
Fusion is the combination of two of BC's Mechtogan and has a hasty personality.
In A Killer Combination, Slash decides to take his soldiers on a training course. When Razenoid allows them, Slash takes them to the training area so he and Kraken can train them. All of a sudden, Nozomi attacks and they summon 2 Mechtogan, Thorak and Flytris to protect them. After unleashing powerful Ability Cards, they combine to form a Duomechtra, called Fusion. Fusion defeats the villains, with a single hit.
Ability Cards: Edit