Michigan Toy Soldier Company : Hydra Miniatures- 28mm Figures - Optio (Squad Leader)
Alternate Stars | Robot or Droid | Alternative Armies
Old Glory Miniatures: Build Your Own Robots (makes 13), 25mm Aliens and Spacemen, BMM-144
Skeletal Robot MAR – em4miniatures
Automata Robotic and Robot Infantry Miniatures in 28mm Scale. Anvil Industry Manufactures High Quality Resin Wargaming Miniatures and Bits or Bitz for 28mm Heroic Scale Tabletop Games
Wargames Illustrated | 28mm Heroic Post Apoc
Tim's Miniature Wargaming Blog: Killer Robots, Tech Priest and a Tank!?