Pokémon: DP Battle Dimension

Pokémon: DP Battle Dimension the second season of the Pokémon: Diamond & Pearl Series. It features 52 episodes of Ash Ketchum and his friends Dawn, and Brock's adventure through Sinnoh from Solaceon Town to Hearthome City.

Human

 * Ash Ketchum
 * Dawn
 * Brock
 * May
 * Max
 * Norman
 * Jessie
 * James
 * Nurse Joy
 * Officer Jenny
 * Paul
 * Conway
 * Barry
 * Zoey
 * Drew
 * Harley
 * Solidad
 * Kenny
 * Johanna
 * Prof. Oak
 * Prof. Rowan

Ash's

 * Pikachu
 * Staravia
 * Turtwig → Grotle
 * Chimchar
 * Buizel
 * Gligar → Gliscor

Dawn's

 * Piplup
 * Buneary
 * Pachirisu
 * Swinub → Piloswine
 * Aipom → Ambipom

Brock's

 * Croagunk
 * Happiny
 * Sudowoodo

May's

 * Blaziken
 * Glaceon
 * Skitty
 * Beautifly
 * Venusaur
 * Wartortle
 * Munchlax

Team Rocket's

 * Wobbuffet
 * Dustox
 * Yanma → Yanmega
 * Seviper
 * Mime Jr.
 * Carnivine
 * Cacnea
 * Meowth

Trivia
Many VA's from 4kids helped out with this season, including old veterans like Rachael Lillis, Dan Green, Lisa Ortiz, etc.