For some reason, my uploader comment no longer appears on the top, so here is an explanation on the Missingno/Cubone/Kangaskhan theory:
"I've already noticed tons of people talking or asking about the fact that Missingno is some kind of Kangaskhan/Cubone connection. As I've explained in the video, this is very unlikely. Missingno takes up over a dozen of the game's extra slots, not just a single one. The reason 'M evolves into Kangaskan is because it is one of the first Pokemon in the game's internal indexing. 'M can also evolve into Rhydon (first in the index) as well, making it even more unlikely that there is a connection."
My new Fact of The Day video explaining the existence, effects, and cause of the Missingno glitch phenomenon in the first generation of Pokemon. Enjoy!