- Name: Mecha Rock (メカロック)
- Number: MRR-2
- Height: 1.37m
- Weight: .8 t
- Hardness: 8
- Weapons: Reflect Shield
- Transformation: 24kt Gold
- Voices: Katsumi Suzuki, Toshiharu Sakurai
- A joker that likes to make everyone laugh. Very fast; he can gather intel with his eyes that work like a high-powered scope. He can recharge his allies using Super Energy Power from his golden body.
- His GoBots counterpart is Nuggit.