He largely interacts with his community and has definitely shown he cares.
Jacksepticeye entered a competition by Pew Die Pie and was one of with 6 You Tubers to win.
Robin has appeared in a Worms Clan Wars video as a secondary player, in "Oh Sir...!
- The Insult Simulator" videos, and in the "Astroneer" videos.
Jack is very well known for his green hair and is the second most popular "celebrity" in Ireland, though Jack has stated many times how being called a "celebrity" makes him feel uncomfortable.
Seán attended college twice in Ireland, the first time (in Music Technology) he did not finish college, but the second time (in Hotel Management) he returned and he graduated with the degree.
He is also an animator that has made several animations for Jack, and others such as Pew Die Pie, Markiplier and the Game Grumps.
Robin is the skills behind the Antisepticeye edits, and Jack has publicly thanked him many times for it.
He sometimes speaks Irish in his videos, such as various religion songs, and some phrases in Irish (some examples here).
Jack has previously said that he was really close to one of his sisters growing up, likely Allison as she is closer to him in age.
During one of his livestreams Jack mentioned that Allison just recently got married, and while happy for her, he is currently unable to picture himself married.
His siblings are Allison, Susan, Malcolm, and Simon.
Jack has stated that Malcolm currently lives in France, and has an Instagram under the account name malcolmwriter, where he sometimes posts pictures of Jack as well.