Adam has short and messy pale blonde hair. His eyes are pink, his bangs overlapping them slightly. He wears a long white gown, tied at the waist with a bright green sash.
Due to his purpose, Adam's personality is malicious and manipulative, trying to lure Eve with a kind temperament while hiding his real motive. He does what he desires when he awakes in Eve, he uses her body to come alive.
Adam exists inside Eden, a project created to supposedly bring peace to the world by using Nanomachines to control all of humanity. His purpose was to get Eve to follow through with the project by promising wonderful things, keeping the real information of what they were doing from her. In the end, along with Eden, he was destroyed by Train.