Tango is a supporting character of the Mega Man series. He's Mega Man feline pet who was created by Dr. Light to assist him against the Staroids.
Tango is a green robotic cat with a green and white helmet, a blue light tail that end in green, green legs and white paws.
Mega Man V
Tango is a weapon in Mega Man V who can rolls in the stage to defeat the enemies and disappears when the bar energy is empty.
Mega Man & Bass
Tango makes a cameo as CD data in Mega Man & Bass.
Mega Man 10
In Mega Man 10 when playng Proto Man, Tango appears on the shop.
Rockman & Forte: Mirai Kara no Chōsensha
In Rockman & Forte: Mirai Kara no Chōsensha, Tango appears as a weapon again.
Mega Man Classic
Mega Man X
Mega Man ZX
Mega Man Battle Network/NT Warrior
Mega Man Star Force