Megan Hollingshead is an American voice actress. She used to be a regular in Pokémon seasons 1-6 until she was replaced by Bella Hudson from season 7 onward. She still continues her work as a voice actress in Bleach.
Sheena Fujibayashi, Lilia (Tales of Symphonia: Dawn of the New World (Uncredited))
Pamela Tatlin (Tales of the Abyss (Uncredited))
Rangiku Matsumoto, Emilou Apacci, Nemu Kurotsuchi (Bleach)
REM (Bobo-bo Bo-bobobo)
Villetta Nu (Code Geass)
Gloria (Daphne in the Brilliant Blue)
Rose Marinade (Fighting Foodons)
Adiane (Gurren Lagann)
Sharona (Shaman King)
Centis, Kanako Shimada (I Dream of Mimi)
Misaki Saiki (Ghost Talker's Daydream)
Mion and Shion Sonozaki (Higurashi)
She, along with former Pokémon VA Tara Sands, worked together since their departure from the series in "Tales of Symphonia: Dawn of the New World" as Sheena Fujibayashi and Genis Sage respectively, though neither of them were credited for it.
Megan has had many va's take on certain roles after her departure from 4kids:
Bella Hudson filled in for her as both Nurse Joy in Pokémon until season 9 and Mai Valentine from "Yu-Gi-Oh! Waking the Dragons."
Andi Whaley filled in for her roles as Mary from the PMC and Cassidy from Team Rocket until Season 9
Karen Neill filled in for her one-time-role as Caroline also until season 9.
Eileen Stevens filled in her role as James' Mom in Season 12.