Pokémon Diamond, Pearl and Pokemon Platinum
If the player chooses to play as a female in Pokémon Diamond Pearl, or Platinum, Lucas will be Professor Rowan's assistant, choosing the starter Pokémon that the player's starter Pokémon is strong against.
Lucas apparently became a trainer before the player, assisting the professor in his quest to fill the Pokedex. At first, he may seem arrogant, but later becomes friends with the player. He has a little sister who will tell the player if there is a mass outbreak; a phenomena in which rare Pokémon appear in a specific location in which the Pokémon would not normally appear.
|Pokémon playable characters|
|Main series||Red • Leaf • Ethan • Kris • Lyra • Brendan • May • Lucas • Dawn • Hilbert • Hilda • Nate • Rosa • Calem • Serena • Elio • Selene • Chase • Elaine • Victor • Gloria|
|Spin-off games||Solana • Lunick • Kellyn • Kate • Ben • Summer • Mark • Mint • Lucy Fleetfoot • Todd Snap • Wes • Michael • Tim Goodman • Scottie • Bettie|