Lucas is the playable male protagonist in , , and . His female counterpart is . In the manga his name is and his is . Furthermore, his Diamond & Pearl outfit closely resembles that of Ash in the series. Lucas also appears with the name '' in the manga series 'Pokemon Diamond and Pearl Adventure', starting out with a Piplup, he was raised by Pokémon. His rival is ().
Lucas also had a brief cameo in the opening of , battling . In addition, concept art for Lucas' anime counterpart exist, suggesting Lucas was to play a bigger role in the main series, but this never materialized, most likely because a voice actor couldn't be found.