I finally found it out.. Mr. L is: TF2 SPY

Mr. L is actually Lil’ Judd from Splatoon 2&3, its confirmed by George Washington

This is the most realistic boss fight in the game: chocolate keeps you alive

Mr. L is actually Toad, that’s why he wasn’t seen throughout the game.

Mr. L is really Dr. Eggman guys. It explains the Brobot and it’s redesign

Guys ur all stupid.. Mr L is sans undertale

people are so dumb.. mr L is obviously Kirby

Numbering is off and includes updates 2, 3, and 4. It's messy but all there.

Kirby Star Allies: The Original Soundtrack

Macho of Dedede

An account dedicated to the wonderful 2007 Wii game "Super Paper Mario"! Pieces of this OST can be found at my other accounts