William "Billy" Koenig is a Level 6 S.H.I.E.L.D.operative that Nick Fury entrusted with safeguarding and operating one of his secret bases. He is also the brother of Eric, Sam, Thurston, and LT Koenig.
Appearances
Marvel's Agents of S.H.I.E.L.D.
Guest cast, played by Patton Oswalt
- Episode 1x22: Beginning of the End (May 13, 2014)
- Episode 2x01: Shadows (Sep 23, 2014)
- Episode 2x09: ...Ye Who Enter Here (Dec 2, 2014)
- Episode 2x10: What They Become (Dec 9, 2014)
- Episode 2x20: Scars (May 5, 2015)
- Episode 4x12: Hot Potato Soup (Jan 31, 2017)