Second place: Shark Pepper. Absolutely ruthless, just came out of the episode being able to backtrack against a train, lift Kabuta up like a child, and there's Shark Giant.
Third: Kabuto. First protagonist, super shifts form for like three minutes, all the other robots are five minutes, and there's a Kabuta Giant just like Shark Pepper.
Fourth: Marble Wheel. Don't remember much about him, just that he had a peace star in his stomach.
Fifth: Cockroach Bully. Cockroach Bully was actually a cobra. I remember Croaking Frog turning around in fear when he saw his prototype.
Sixth: Croaking Frog. In theory he can't beat a lot of people, but this is a battle he has to fight.
Seventh: Jiro Kaname. Has an awesome machete in his hand, and once cut the Shark Giant's foot loose.
Eighth: Scorpion Lai Lai. The cockroach bully's little brother, always getting abused. Seems to be a bit more powerful than Spider Detective.
Ninth: Spider Detective. The cockroach bully's little brother, always getting abused.
Tenth: Flying robot that can merge with Kabuta.
Eleventh: Wheel Roll. A very obscure robot that doesn't make many appearances.
Twelfth: Tendorina. The only female robot that doesn't super shift forms and was molested by a rogue.