Data

Data is a mysterious little robotic monkey from the Mega Man Legends series, a friend of Mega Man Volnutt that was found by his side by Barrell Caskett. He only talks with monkey sounds and Mega Man is the only one who understands him, but it's later revealed Data can speak normally and is Mega Man's peripheral memory storage device. He is Mega Man's supporter and sticks to him like a shadow, probably also travelling with him in his adventures. In the series, Data appears in several areas dancing, and players can save the game, completely recover life and weapon energy, and obtain advice by talking with him.