Ooh, yikes! I will try.
Left to right first row...
Nippo, Nyola, The Dummy, Ibac, Sivana, Mr. Mind, Mr. Banjo, Capt Nazi
Second row...A crocodile man, Black Adam, Goat Man, Evil Eye, Oggar, Ramulus/Nightshade, Jeepers
3rd...Oom, Sabbac, Mr. Atom, King Kull, Mister Who
I might have spelled them wrong but I think that's it.