Leiko Tanaka (田中 令子 Tanaka Reiko), alias Go-Go Tomago, is a member of the Japanese super-team, Big Hero 6. She is young and highly aggressive, with little patience for others, but a very strong will, someone who does not give up easily. She is also known as the hothead of the team as she tends to act on her aggressive tendencies without considering the results. GoGo was apparently drafted into BH6 rather than facing jail time. The nature of her criminal convictions is unknown.
When Alpha Flight worked with Big Hero 6 to track down the threat known as X the Unknowable GoGo was disappointed to be part of the contingent that "held the fort" preferring battle.
Go-Go Tomago Battlesuit: The Go-Go Tomago battle suit is a voice-activated device that absorbs and amplifies kinetic energy, enabling it's wearer to temporarily transubstantiate his or her body mass into thermochemical energy simply by uttering the trigger words "Go-Go Tomago".
This transformation can be either partial or total. During a partial transformation, the wearer's body is surrounded by a half-inch thick thermochemical aura that grants the wearer limited invulnerability, flight and energy projection capabilities. During a total transformation, the wearer's entire body transubstantiates into a high-speed, high-impact spherical "powerball", which builds up greater speed and force with every additional ricochet impact while in motion.
After a series of sufficiently numerous and forceful ricochets to build up power, the wearer can hurl his or herself into a given target with tremendous explosive impact. Go-Go Tomago is apparently unlimited by the amount of time that she can remain in the thermochemical powerball form, although her body becomes fatigued after extended periods of ricocheting at high speeds. She has been timed at speeds of up to 185 miles per hour. The Go-Go Tomago helmet is made entirely from carbon fiber and is extremely durable and lightweight too.
Go-Go Tomago is a skilled motorcyclist and an accomplished racer and stunter. She has also several contacts in Japan's criminal underworld, as many of her former associates are unaware that she secretly serves as a member of Japan's premiere super-hero team.