Hasan Doğan Piker (/ˈpaɪkər/, Turkish: [haˈsan doˈan piˈcæɾ]; born July 25, 1991), also known as HasanAbi (abi meaning big brother in Turkish), is a Turkish-American[1][2][3] Twitch streamer and left-wing political commentator. He has previously worked as a broadcast journalist and producer at The Young Turks and as a columnist at HuffPost. He is currently one of the most-viewed and most-subscribed-to streamers on Twitch, where he covers news, plays a variety of video games, and discusses politics from a socialist perspective.[4][5][6]