Mommy Mearest is a Friday Night Funkin character in the SMG4 series. She's the wife of Daddy Dearest and the mother of Girlfriend. She is a supporting antagonist in the game itself and in SMG4: If Mario Was In.... Friday Night Funkin and is the main antagonist of SMG4: If Mario Was In Friday Night Funkin 2.
She was one of Daddy Dearest's minions. Her rap battle was against Luigi in M.I.L.F (or 'begone thot' on the week select screen in the video). She ends up losing when Luigi's voice annoys her until she explodes. She says that this isn't over, then a truck runs her over.
She grieves about Daddy Dearest's injuries from the previous video, then decides to get revenge by cursing Mario, Tari, Saiko Bichitaru, Luigi, Whimpu, Axol and Melony. She summons her minions to defeat them, but loses and attempts to go to space with Dad until they both get shot down.
Mommy Mearest - FNF Wiki