American Horror Story: Gus Kenworthy.

Gus Kenworthy just won Halloween.

The athlete recently made his acting debut in the ninth season of acclaimed horror anthology series American Horror Story, 1984, as Chet Clancy, an ex-Olympian with a drug and alcohol addiction and tendency for angry outbursts.

To commemorate spooky season, the star dressed up as the other characters on the season: Brooke (Emma Roberts), Donna (Angelica Ross), Montana (Billie Lourd), Trevor (Matthew Morrison), Xavier (Cody Fern) and Margaret (Leslie Grossman).

His fellow co-stars were living for his transformations. “Omg. This is brilliant!” said Fern, while Ross wrote: “This is how you pay homage to black characters without doing black face! Thank you for coming to my ted talk!”

Roberts said it was “iconic” and Lourd joked: “STEALING WIGS AND HEARTS!”

1984, follows five teenagers who become camp counsellors for the summer to escape the wrath of a serial killer called The Night Stalker. There, they encounter a lunatic called Mr Jingles who slaughtered nine people at the camp 14 years prior. 

It also stars DeRon Horton, Zach Villa, John Carroll Lynch, Orla Brady and Tara Karsian.

The next episode of 1984 airs Wednesday in the United States on FX. It will premiere one day after in the UK on Fox.

Related: Here’s how 1984 connects to every season of American Horror Story.

Related: Ryan Murphy reveals how many seasons of American Horror Story there will be.

Related: The 13 greatest American Horror Story characters of all time, ranked.