Lucas

Lucas in the Pokémon anime is a minor character, appearing primarily in the movie Giratina and the Sky Warrior (the 12th Pokémon film, set during the Diamond & Pearl era).

He's portrayed as a skilled young Pokémon Trainer from Twinleaf Town in the Sinnoh region, based on the male player character/protagonist from the games Pokémon Diamond, Pearl, and Platinum. In the movie, he battles Brendan (the Hoenn male protagonist) at the beginning, using his Magmortar against Brendan's Rhyperior.

Unlike Dawn (the female counterpart), who became a major recurring companion in the Diamond & Pearl anime series alongside Ash, Lucas does not appear as a regular character in the main TV anime episodes—he remains limited to that brief movie cameo. His personality and role are not deeply explored in the anime beyond showing him as a capable battler.