Jack is Matt's pet ball python.
Little is known about Jack. He is named after Big Boss from the Metal Gear series, particularly his appearance in Metal Gear Solid 3 where his real name is revealed to be John, but is commonly nicknamed Jack by Major Zero and The Boss. Matt was originally going to name him Pliskin, Solid Snake's alias in Metal Gear Solid 2, which is also a reference to Snake Plissken from Escape from New York, one of the characters he and Big Boss were based off of. In tandem with the Metal Gear theme, in Matt's first apartment, above Jack's tank was a Metal Gear Solid 3 poster, with several Metal Gear action figures.
- Matt's Bomb-Ass Apartment Tour!
- Matt Buys Too Much Metal Gear Stuff
- The announcement video for episode 3 of the Super Best Friendcast
- As the name implies, in episode 3 itself, Matt gives the details of Jack's escape attempt
- YOU'RE ENTERING THE ZACH ATTACK
- Matt's Bomb-Ass Apartment Tour 2: Judgement Day
- Halloween Murder Mystery Spooktacular!