Calvin Rankin has the ability to copy the powers, abilities, attributes, IQ, talents, fighting skills, and characteristics of anyone around him.

Along with all those other things he can copy their physical appearance such as their skin color, bone structure, hair style and color, bone composition, voice, eye color, and other physical traits of those he mimics. When Calvin copies the abilities or powers of others he doesn't copy a persons flaws (Ex. When Cyclops (Scott Summers), Cyclops was young he received a bump on the head which allowed him to not control his powers.