Transcending Pokémon, Missingno, the Missing Number, is one of the most famous glitches in all of video games. Thanks to freak occurrences and several programming oversights, an unofficial Pokémon character was accidentally generated. Missingno is known for its Eldritch-like sprite, permanently corrupting your Hall of Fame, scrambling the graphics of the game, and duplicating your 6th item in your bag.

Retro Game Mechanics Explained’s latest video explores the math and science behind Missingno’s frightening and bizarre sprite. What starts as a discussion about Missingno drifts into larger territory as the sprite graphics for the Generation 1 Pokémon games are analyzed and explained. This is a must-watch for fans of the early days of Pokémon! Check it out above!!