Wukong Impulse Gundam

The youth at the center of the story. Though he lost his memory due to a certain incident, after he meets Liu Bei's group and embarks on a journey, his memory returns little by little. He normally expresses little emotion, but jumps in when he is interested in something. When his anger rises, he turns into a giant monkey, loses his senses, and runs amok. A harsh fate awaits him, but he faces it supported by the bonds of friendship.

(Source: Official Site)