Tasmanian Devil from Detective Comics 852 (or any old Super Friends appearances of Tas or Bushmaster)
Kyle Raynor from last year's DCU Halloween Special
Frogs of Central Park (of Throg/Thor fame) in Doctor Strange #2 (they fight Dormannu apparently) Also from Thor 502 I think when they say goodbye to Thor before he fights Onslaught
Woodrue (Floronic Man) from Swamp Thing 166, 167 and 169 (170 has been posted)