Person

Mariah Rose Faith Casillas

Acting · Born 1995-12-29 · San Diego, California

Mariah Rose Faith is a trained actress, singer, songwriter, and filmmaker who has found success in musical theater and film. She first gained public attention on YouTube for her musical theater song covers. Faith is known for her roles as Regina George in the first national tour of Mean Girls and her work with the comedy theater group Team Starkid. She has trained with acting and vocal coaches in Los Angeles and collaborated with award-winning creatives.

• 

  Parlor Room

  Self

• 

  Dirty Laundry

  Self - Guest

• 

  Hey, Melissa!

  Melissa

• 

  REALM

  Shira Masterling

• The Great Debate - Tweeters Vs. Tik Tokers

  Self

• 2025The Great Debate - Tweeters Vs. Tik TokersSelf
• 2025REALMShira Masterling
• 2025Parlor RoomSelf
• 2022Hey, Melissa!Melissa
• 2022Dirty LaundrySelf - Guest