Pablo Tell Schreiber is a Canadian-American actor. He is best known for his stage work and for portraying Nick Sobotka on The Wire (2003, 2008), William Lewis on Law & Order: Special Victims Unit (2013–2014), Mad Sweeney on the Starz series American Gods (2017–2020), and as George "Pornstache" Mendez on Orange Is the New Black (2013–2017), for which he received a Primetime Emmy nomination for Outstanding Guest Actor in a Drama Series. He stars as Master Chief in the Paramount live-action series Halo (2022–2024) which is based on the franchise of the same name.