Even other heroes in the DC Universe are itching to see the New Superman film and conversing about it..
A bit of fun featuring a few characters who will most likely never see light in a movie, but i'll keep on using in my fan art.
Vartox the Hyperman - This pastiche of Sean Connery's Zardoz character actually predates Powergirl by apparently 2 years ( 1974 so his creators must have liked Zardoz ) and was a rival/ friend of Supermans until the 1986 reboot. His amusing reappearance in the 2010 Powergirl comic was my first introduction to the character.
Basically as powerful as a Kryptonian, his powers are listed in his Wikipedia entry.
Maxima - Created in 1989 as a foe/ally of Superman, a hot tempered but noble space warrior princess, Maxima sought Superman out as a potential lover, and even had a surprisingly tender if brief flirtation with Captain Atom ( though Cap is very good at pushing people away when things get too serious, one of his character flaws ). Nearly as powerful as a Kryptonian with her exceptionally powerful telepathic/telekinetic capabilities
Atlee - Or Terra III, being the Third Terra character i prefer to use her actual name Atlee. Alien Geo-Kinetic, and adorably enthusiastic about being a Superhero. Became Powergirls Best Friend in record time. I've altered her hair and costume a little but i think it works.
Powergirl - A Kryptonian, lord knows i've written enough ( and most likely will write more about her ) in my Journal and on other pictures on this character. The only character in this picture who is currently featuring in any comics, though it is a questionable incarnation.
Captain Atom - Formerly a human who was bonded to an alien metal on a molecular level effectively giving him Kryptonian power levels. Once a fairly prominent character in DC in the late 1980's he wound up being an underused character in DC comics, yet in spite of bad ideas from writers/editors/whoever calls the shots over the years, he still managed to stay intact thanks to some writers trying very hard to get him back on track, at least until the New 52 Reboot revised him into a vague 'Dr Manhattan' alike.