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Marcia is a character in Pokémon Colosseum and Pokémon XD: Gale of Darkness.
Marcia is first seen in the back of her father Duking's house in Pyrite Town. She is part of the underground rebellion against Miror B. and plans to recover Duking's stolen Plusle.
Her role is greatly expanded in XD. Marcia has now become a reporter for ONBS and has a reputation for being reckless. She and her cameraman Cameron are encountered leaving Pyrite on Michael's first visit en route to a news story at Phenac City. However, when she fails to come back, Michael is sent to find her. Marcia and Cameron are eventually found being held hostage by Snattle in Phenac Stadium, where the Cipher Admin is trying to intimidate her into handing over their videotapes of the evil activities within Phenac. As Michael fights Snattle, Marcia and Cameron tape the battle and later run it on ONBS, exposing Cipher to all of Orre.
Later, she can be found outside the Cipher Key Lair, where she and Cameron are reporting on Chief Sherles's plans to arrest the Cipher members inside.