Premise: Kathleen Delaney is an American actress, voice actress, singer, and dancer who works on Broadway and on the properties of 4Kids Entertainment. She is best known as the voice of Hina in the 4Kids dub of One Piece, Mai Valentine in uncut versions of "Yu-Gi-Oh!" and Rouge in "Sonic X" and the succeeding games until 2010, when she was replaced by Karen Strassman.
Hypothesis: Delaney is best known for being replaced by Karen Strassman.