Katheryn Winnick as Jenna Whooly in Satan's Little Helper (2004)

 Katheryn Winnick as Jenna Whooly in Satan's Little Helper (2004)

Jenna Whooly is caring, confident, and protective, returning home for Halloween only to become caught in a terrifying and bizarre series of events. Her determination to protect her family makes her a central figure in the film's darkly comedic nightmare.
Katheryn Winnick delivers an energetic and engaging performance, balancing humor, tension, and genuine emotion. She brings warmth and resilience to Jenna while embracing the movie's unusual blend of horror and satire.
Winnick's portrayal remains one of her memorable early genre roles and an important part of the cult appeal of Satan's Little Helper.