On August 13, 2003, in the middle of his high school's talent show, a large-scale blackout occurred in the Northeastern region of the U.S., including Ohio where MatPat was hosting at the time. (DEATH by Hacking (Watch Dogs pt. 2))
MatPat stated that when he was in seventh grade, he made a two-sided medallion of Sir Francis Drake which earned him a "clap and a half" from his teacher. He uses the medallion in his livestreams on GTLive.
MatPat said "Screw that guy!" to Haedox on a livestream, but later stated on Twitter that he was joking.
When MatPat was in first grade, he filled out a form about his favorite things. One of the questions asked about who his role models were, and MatPat put down his mother, father, and Dracula. (Castlevania, Dracula Spectacula)
On that same paper, another question asked what he wanted to learn that year, and MatPat wrote "chemistry".
When MatPat was in ninth grade, he had a math teacher named Ms. Allen. ([DON'T Attack The Titans!]])
As of October 17, 2016, MatPat was officially recognized as a member of the Universal Life Church and has all rights and privileges that come with it, such as officiate wedding, house blessings, and "[doing]" funerals. He did this to officiate Jason's wedding. He revealed this via Twitter and a livestream.
At MatPat's "debut" at VidCon, he had the honor of being one of the creator keynote speakers. During his speech, he shared a story with the audience:
While at SGC 2015 in Dallas, Texas, the GT crew decided to go to an arcade, as they had one more night in Dallas. They went to the sports bar Dave & Buster's and went to its arcade. MatPat won at the air hockey. At the end of the night, three kids whom he had met earlier in the evening came up to MatPat and exclaimed that he was "not a douche bag", to MatPat's confusion. The kids repeated their statement. MatPat, still confused, thanked them for the "complimented" and asked them why they did that. The kids explained that, because of the nature of his (MatPat's) videos (research, science, etc.), and the "character" MatPat seems to put on in his videos, they thought he was an "arrogant, know-it-all prick who was a jerk and, in short, a douche bag", as he described it. However, after hanging out and spending time with him, they changed their opinion of him. This experience made MatPat think about "who [he is] and what [he does] online." Prior to this, he thought that the "Hello Internet! Welcome to GAME THEORY!" character on YouTube and the "MatPat the human" (him in real life) were easily distinguishable, but this made him really learn that many people didn't understand that. It also taught him the importance of, aside from content, what really makes a YouTube channel of user connect with their audience is personality. (The Douchebag Speech: VidCon 2016 Keynote)
MatPat's earliest memories are of his Mario-themed bedroom and playing Castlevania.
When MatPat was in tenth grade, he attended a dance at an all-girls Catholic school, which "went a little wild" and "was definitely... an intense night". (Satan's Plot THICKENS!)
In tenth grade, a friend confessed to MatPat that he decided not to commit suicide simply because MatPat had had "short, polite" conversations every morning before choir practice. (How Minecraft BROKE YouTube!)
One time, MatPat and Stephanie received a note in their mailbox from a fan. He found it "kinda weird" because it was unmarked, unaddressed, written in code, and that the sender knew their address and physically left the letter in their mailbox. (Beyond Fidget Spinners – How to Create a YouTube Trend)
MatPat has been struck multiple times in his right temple by a big triangular rock, a hook playing tetherball without the ball, and a bar on the monkey bars. He jokingly stated that these are likely the reasons why he is the way he is. (There Are NO RULES!)
MatPat hates the sound of popping balloons. He would cover his ears when he would pass by balloon-popping games in amusement parks. (CAUTION: LOUD NOISES!)
Matpat suffers from aviophobia, or the fear of flying on planes. He tends to adopt a Southern accent when flying. Stephanie has even offered to give him sleeping pills, as "[she is] the one who has to sit next to him on fourteen-hour plane journeys". (Source Needed)
Despite working with them on YouTube for over four years, MatPat has, as of 2014, only met the co-owners of his channel (Gaijin Goombah, Ronnie, Drake, and Kenny) three times in person. The first time was at the SGC convention in 2013, the second time was at the same convention in 2014, and the third time was in Texas of the same year where he drove real tanks with his friends to test whether or not the real-life tanks were accurately represented by the fictional tanks in the game War Thunder.