Latios was Tobias' second Pokémon during his battle with Ash, after Ash's Sceptile defeated Darkrai. Latios easily defeated Sceptile with Giga Impact, overpowering Leaf Blade and then battled Swellow. Swellow was unable to land a single blow with Quick Attack or Aerial Ace on Latios and was defeated by a single Luster Purge. Ash then sent out Pikachu to battle the legendary Pokémon. Latios managed to dodge its Quick Attack, and to counter Volt Tackle and Iron Tail using Giga Impact.
Realizing that raw power wasn't enough to defeat Latios, Ash changed tactic and had Pikachu jump onto the Eon Pokémon's back and hit it with several close range Thunderbolts. Latios used Light Screen and then threw Pikachu off and tried to finish it with its signature move Luster Purge. However Pikachu countered with a combination of Volt Tackle and Iron Tail which he used to charge straight with Iron Tail into Latios' attack, resulted in a massive explosion which knocked out both Pokémon.
|Luster Purge||Psychic||DP189: The Semi-Final Frontier!|
|Giga Impact||Normal||DP189: The Semi-Final Frontier!|
|Light Screen||Psychic||DP189: The Semi-Final Frontier!|