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Bill Hader, Star Wars, BB-8

Frazer Harrison/Getty Images; LucasFilms

How's this for a surprise Star Wars: The Force Awakens credit?

Both Bill Hader and House of Lies and Parks and Recreation actor Ben Schwartz are credited in the movie as "BB-8 Vocal Consultant." That's right, they helped create the voice of the new, cute droid, who is introduced in J.J. Abrams' anticipated sequel, which hits theaters on Friday, Dec. 18.

"J.J. f--king around with this sound effects app on his iPad that was attached to a talk box operated by me," Hader told HitFix in comments posted on Tuesday. "It looked ridiculous but it made BB-8's voice. At first I tried doing a voice, but we all agreed it sounded too human."

Hader had also done voiceover work for Abrams' 2013 movie Star Trek Into Darkness, in which he provided the voice of the computer of the USS Vengeance starship, as well as his 2010 film Scott Pilgrim vs. the World. Hader has also portrayed several roles on South Park.

Star Wars Trailer GIFs

Disney/YouTube

From UCBNY to a galaxy far far away. I present to you two genuine dumb dumbs. BB8 BABY!!! #starwars

A photo posted by Ben Schwartz (@rejectedjokes) on

Schwartz talked about his unique Star Wars role on social media.

"You're looking at a bonafide BB8 voice over consultant. And nothing makes me happier. This movie is amazing," he tweeted, adding, "Quite possibly the hardest and coolest secret I've ever had to keep."

"I was an official BB-8 voice over consultant for #forceawakens," he said on Instagram. "Seeing my name in the credits of a Star Wars film made me smile so wide it almost tore my face. J.J. did this franchise so proud. Can't wait for everyone to see!!! #StarWars."