The Piranha is a special vehicle developed by Project Spectrum. The Piranha is an indigo motorcycle with a weaponized sidecar, able to be launched and convert into a submersible vehicle. Its primary pilot is Sylvester "Sly" Rax.
Sly Rax drove the Piranha into battle against the Transformers Kup and Aileron in Greece, unleashing a set of machine guns from the sidecar. Rax also rode it in M.A.S.K.'s assault on Autobot City, where he was promptly knocked off by Arcee.