Seán McLoughlin

Seán "Jack" William McLoughlin (born 7 February 1990), better known by his online pseudonym Jacksepticeye, is an Irish YouTuber, known primarily for his comedic Let's Play series and vlogs.

As of November 2018, his channel has over 10 billion views and over 21.5 million subscribers, currently ranked the 54th most-subscribed YouTube channel as well as the most-subscribed channel in Ireland.