Mary Mouser was raised alongside her siblings, Laura Ashley Mouser and Aaron Parker Mouser. Her brother Aaron Parker is also an actor.

Mary Mouser’s little sister is Laura Ashley Mouser and she is also an actress. Mary Mouser has not revealed enough identifying information regarding her siblings. However, they are of American nationality.

There is no readily available information regarding Mary Mouser’s siblings’ body measurements, educational background, academic qualifications, and childhood.

Mary Mouser was a voice actress in the audio drama series, Adventures in Odyssey as Samantha McKay, younger sister of Grady McKay.

Mary Mouser has appeared in guest starring roles on CSI: Crime Scene Investigation, Without a Trace, The King of Queens, Monk, Inconceivable, Scrubs, and One Life to Live.

At the 2006 Best of Fest Awards at the KIDS FIRST! Film and Video Festival, Mary Mouser received the Outstanding Performance Award for her voiceover work in Eloise: The Animated Series.