John Carroll Lynch is headed to the “Freak Show.”

The “Fargo” alum will play a core villain on season four of “American Horror Story,” exec producer Tim Minear revealed on Saturday night during the show’s Comic-Con debut.

Minear teased that the baddie will rival season one’s Rubber Man, “Asylum’s” Bloody Face and even “Coven’s” Minotaur. He will “scare the s**t out of you,” alright.

Meanwhile, the rest of the cast divulged their character names: Sarah Paulson is Siamese twins Bette and Dot Tattler, Emma Roberts is Maggie, Kathy Bates is Effil Darling, Angela Bassett is Desiere Duprée, Evan Peters is Jimmy Darling, star Jessica Langeis is Elsa Mars, and “AHS” newbie Michael Chiklis is Wendell Del Toredo.

The new season — set in 1950s Jupiter, Florida — premieres this fall on FX.