Lance's Dragonite helped stop the legendary battle between Kyogre and Groudon.
Masters Eight Battle VS Diantha
Dragonite was the first Pokémon he used in the battle and it defeated Diantha's Aurorus
which used a few defensive moves to soften the hits against it but Dragonite's attacks were too strong. It later faced off against Diantha's Gardevoir
where it Dynamaxed but was damaged from its earlier battle. While trying to use Hyper Beam, it put itself into a checkmate position and Mega Gardevoir avoided the attack and used Moonblast to knock it out.