Aptom is a bad guy gone good, and mind controlled back to bad again.
He is the most powerful lost unit, or even the most powerful Zoanoid there is.
He has the ability to transform into any living thing he touches and can transform
into multiple things at once merging the forms into one being aswell as being able to morph in to multiple figures. His transforming
ability also allows him to heal himslef, Aptom obviously enjoys absorbing Zoanoids as he joyfully dose that often to further
enhance his powers once transformed.
He also has a high resistance against telepathy becuase when he still worked for Chronos he had to
wear a telepathic-transmitter to allow Dr Balcus to control him.
As the story goes on Aptom ends up becoming so powerful that he is able to stand a chance in battle against a Zoalord.