Pablo Tell Schreiber is a Canadian-American actor. He is best known for his stage work and for portraying Nick Sobotka on The Wire, 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–present) which is based on the franchise of the same name.

Nickolas Andrew Sobotka is a fictional character on the HBO drama The Wire, played by actor Pablo Schreiber. Nick is the cousin of Ziggy Sobotka, the wayward and rebellious son of Nick's uncle Frank Sobotka.