Liza's Lunatone was Liza's only known Pokémon.
Lunatone was first seen battling Tate's Solrock. Lunatone proved to be significantly stronger than Solrock, blasting through Solrock's SolarBeam with its powerful Ice Beam and freezing it at the same time, winning the battle. Lunatone and Solrock were also used to defeat Team Rocket.
During their first battle with Ash, Tate and Liza were unable to work together properly and would probably have lost if Team Rocket hadn't returned to interrupt the match. Lunatone and Solrock were captured but were later freed and helped defeat Team Rocket again by using their Psychic attacks.
During their rematch with Ash, Tate and Liza commanded Lunatone and Solrock so effectively that Ash was unable to find an opening until he finally ordered his Pikachu to aim Thunder straight into the clouds. Pikachu and its partner Swellow were then hit by the Thunder but stored the electricity in their bodies causing them to become covered in an electrical "armor". Using their armor to increase the power of their attacks, and to weaken the power of Lunatone and Solrocks attacks, Swellow and Pikachu overwhelmed and defeated both Pokémon at the same time.
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|Ice Beam||It's Still Rocket Roll to Me!|
|Psychic||It's Still Rocket Roll to Me!|
|Tackle||It's Still Rocket Roll to Me!|
|Light Screen||It's Still Rocket Roll to Me!|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.