Known for his appearance as Almer Samurai Bun on HBO's The Leftovers, Sam Littlefield is set to join the first season of The CW's Batwoman.

Littlefield will play a character called Mouse, who works for Alice in the Wonderland Gang. Not much else has been revealed about his role, though Mouse will be a recurring character.

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In DC Comics, the Wonderland Gang is a group of criminals led by Alice, a mysterious figure who is known for speaking in mostly quotes from Lewis Carroll's Alice in Wonderland. Rachel Skarsten will play Alice in The CW series. She will be Season 1's main antagonist.

In addition to The Leftovers, Littlefield has also made appearances on Sharp Objects, Good Behavior and NCIS. He is also an accomplished screenwriter, penning several shorts and co-writing the indie film Mother’s Little Helpers.

Batwoman is part of The CW's Arrowverse, which includes shows like Arrow, The Flash, Supergirl and Legends of Tomorrow.

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Written by Caroline Dries and developed by Bertlanti Productions and Warner Bros. Television, Batwoman stars Ruby Rose, Rachel Skarsten, Meagan Tandy, Camrus Johnson, Dougray Scott, Elizabeth Anweis and Nicole Kang. The series will premiere on Sunday, Oct. 6 and air on Sundays at 8 pm ET/PT.

via Deadline