Being a prototype robot, Proto Man's design was not complete. Although he greatly exceeded Dr. Light's expectations on several levels, it was later discovered that Proto Man's energy core had a critical problem that would eventually make him stop functioning. Dr. Light planned to repair him. However, being created too independent, Proto Man feared the modification would change his character. Proto Man refused to have Dr. Light meddle with his systems and fled to protect his sense of identity. Approx. Size: 4"L x 3"W x 9"H.