- Name: Battle Rock (バトルロック)
- Number: MRR-1
- Height: 1.92m
- Weight: 1.02 t
- Hardness: 10
- Weapons: Justice Laser Gun, Psycho Fire, Burning Blocker, Cosmo Kenpō, Searcher Beam
- Transformation: Kimberlite
- Voices: Yuzuru Fujimoto (Java, ep 22), Hideyuki Umezu (ep 29), Bin Shimada (Mars, ep 32)
- Although stated to be the leader of the Rock Lords in the Bandai toy pack-in materials, in the anime Battle Rock was depicted as being a very common type of Rock Lord.
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