“American Horror Story” is about to become legen -- wait for it -- dary! According to reports, “How I Met Your Mother” star Neil Patrick Harris has officially finished filming his final Season 4 scene for “Freak Show.” And it looks like Harris’ last appearance on the gruesome FX series has left him feeling a little, well, grossed out.

“Just filming my last scene for ‘American Horror Story,’” the 41-year-old actor recently tweeted to his 12 million followers. “I need to take a shower. Wash off all this horror.”

Does that mean fans of the terrifying miniseries should anticipate Harris to meet a dreadful – and dare we say messy – demise? Considering the fact that the bloody death of Matt Bomer’s character Andy is still sending chills up our spines, we can only imagine what gory ending Ryan Murphy, co-creator of “AHS,” has in store for Harris.

In October, it was revealed that Harris, 41, would be appearing in two episodes of the show’s fourth season. The Wrap elaborated, explaining that viewers should anticipate Harris to make his “AHS” debut in episode 11, “Magical Thinking,” and return in episode 12, “Show Stoppers,” as a chameleon salesman.

“He had very specific ideas for what he wanted to do, and I had very specific ideas, so we’re working on melding those,” Murphy told TVLine of Harris' role. “He’s awesome. He’s obviously one of our great entertainers, and I’d love to see him and Jessica Lange [Elsa Mars] go at it in a really cool, fun way. Neil seems to be intrigued by that notion.”

But it looks like someone else will be snagging screen time with Lange in a “sexy storyline” TVLine teased. According to their report, Harris’ husband, David Burtka, 39, will also be making a guest appearance on “Freak Show,” acting alongside Lange’s character in the season finale of the show’s fourth installment.

Catch Harris' debut role in "American Horror Story: Freak Show," Wednesday, Jan. 7, at 10 p.m. EST on FX.

Are you excited to see Harris and Burtka in Season 4 of “American Horror Story”? Sound off in the comments section below with your predictions of how the duo’s storyline will play out in “Freak Show.”