They both like bangs. She was created by an Otto. Supergirl once went by Mae, Doc Ock used to date Aunt May and now she IS his aunt. They both have a thing for redheads (MJ, Lex Jr., Jimmy, etc.). He uses his mind to control his additional arms as if they were his actual arms; she uses her mind to control her skirt from the effects of physics.
What do you think?