
Fabianne Therese Gstottenmayr is a Sri Lankan American actress and director known for starring in several successful independent films including Netflix's Teenage Cocktail (2016), John Dies at the End (2012), Anchor Bay's The Aggression Scale (2012), A Glimpse Inside the Mind of Charles Swan III (2013), and the AMC web series The Trivial Pursuits of Arthur Banks (2011).
Therese's family often moved when she was growing up, including to Austria, Sri Lanka, Abu Dhabi, and Palm Springs. She originally focused on becoming a track runner before getting involved in acting. She is a great-great-granddaughter of Ceylonese newspaper editor and democratic activist Armand de Souza.

Dolly
2026 · as Macy

Playing It Cool
2014 · as College Girl

Endless Love
2014 · as Checka

John Dies at the End
2013 · as Amy

Southbound
2015 · as Sadie

Starry Eyes
2014 · as Erin

Teenage Cocktail
2016 · as Jules Rae

Rebirth
2016 · as Betty

The Aggression Scale
2012 · as Lauren

Frank and Cindy
2015 · as Melissa

Hover
2018 · as Tania

American Pets
2018 · as Lani

Sequence Break
2017 · as Tess

Carl's Motel
2019 · as Michelle

Tight
2024 · as Wife

Palisade
2015 · as Natalia

Dye Red
2020 · as Aurora

Initiation
2015 · as Leah