Armin Shimerman is an American actor and author. He is known for his work as the Ferengi bartender Quark on Star Trek: Deep Space Nine, Principal Snyder on Buffy the Vampire Slayer and Judge Brian Hooper in the first 7 episodes of Boston Legal in its third season in 2006. He is also known for his voice work as General Skarr and Stomach in Grim & Evil, Evil Con Carne, and The Grim Adventures of Billy & Mandy, Dr. Achilles Milo in Justice League Unlimited and reprised the role in the 2016 video game Batman: Arkham Underworld, Prof. Mark Haley and Ace Morgan in Batman: The Brave and the Bold, Zilius Zox in Justice League Action, Doctor Nefarious in the Ratchet & Clank series and Andrew Ryan from BioShock. He also voiced various characters such as Dr. Henry, the Nightmare Alien, Mr. Murphy and many others in the Cartoon Network animated series Regular Show. He is sometimes credited as Arman Shimmerman or most notably Armin Shimmerman.