Morgana Ignis

Morgana Ignis voices Millie's younger sister, Sallie May, as well as the Catfish Monster from "Spring Broken" in Helluva Boss.

Career
Ignis is an American screen and stage actress, best known for playing dark, eccentric, and visually transformative characters in the comedy, science fiction, horror, and fantasy genres. She is often noted for her tall, slender body-type and versatile physicality.

Ignis was a regular guest star on the IFC series Stan Against Evil (2016) playing multiple featured demons, performed as Edgar the Werewolf in The curious creations of Christine McConnell (2018), puppeteers the alien talkshow host Ned in the Disney+ series, Earth to Ned (2020).

Trivia

 * Like her character, Sallie May, Morgana is a transgender woman.