Seán McLoughlin (born 7 February 1990), better known as Jacksepticeye, is an Irish YouTuber. He is best known for his vlogs and comedic Let's Play series. He is the most-subscribed Irish channel. He is also known for his charity streams in which he raises money for good causes. "Business Insider" has called McLoughlin "one of YouTube's most [well known] philanthropists".