Did your character appear in stories set before 1970?
No
Has the character whose stories this character appeared in ever been a member of the Justice League?
Yes
No
Did this character appear in stories starring Manhunter?
No
Summary
Not a Superhero
Normally featured in comics starring either Superman or Batman, but not Superman.
Not female
Doesn't belong to a team
Villainish
Would not break through a brick wall by punching it on a normal day in Metropolis.
Not Batmite or Jason Bard or a Robin
Not a supporting character as things turned out
Has some scientific aptitude, even though it's not obvious.
From Earth
Appeared pre crisis but post 1970
Uses a codename
Is human
Has brown hair
does not have a hunchback
doesn't work in government (including military, police force, etc.)
Isn't a martial artist
Does wear a costume
Hasn't met Barbara Gordon, Brice Wayne, Dick Grayson, Hal Jordan or BATO
If appearances were made post crisis it wasn't by much.
doesn't have super powers
Isn't a martial artist
Didn't initially appear heroic or non-villainous, before being revealed as a villain
Hasn't been an inmate in Arkham
Hasn't vistied the Batcave
Isn't a member of BATO or the Wayne Family
Isn't more associated with Superman rather than Batman
Hasn't acted as a henchman / assistant to a super villain
Wasn't created by Denny O'Neal
Isn't a politician
Hasn't appeared in TV/Film
Is from Earth-1
Has appeared more than twice.
Hasn't had a feature in Detective Comics
Isn't involved in the organized criminal underworld (mob, triad, etc)
Has appeared in Detective Comics, in a story not starring Batman but starring a member of the JLA.
Doesn't appear in stories starring Manhunter
Isn't your character disfigured or physically altered in any way.
Doesn't reside in Gotham
Doesn't your character appear in stories set before 1970?