Seán William McLoughlin (born February 7, 1990), better known as Jacksepticeye, is an Irish YouTuber and Let's Player, best known for his eccentric personality and catchphrases. He is one of the most popular let's players on YouTube, with over 10 million subscribers.
Game Grumps Edit
Seán has been mentioned by the Grumps on a few occasions, usually when also talking about the Grumps intern Jack, who is also Irish.
Seán appeared as a guest via Skype during the "Horsey Give Grumps" stream.
Ninja Sex Party Edit
Seán stared in the music video for the Ninja Sex Party song "Cool Patrol". He plays the role of someone getting bullied at a bowling alley before Danny attempts to teach him how to be cool and stand up to them. However, his instruction proves unhelpful, as Seán's character ends up getting killed by the bullies off-screen.