Egghead (aka Life Jacket Kid and Life Vest Kid) is an image of a African boy in a yellow life jacket. It has become a minor meme on the SiIvagunner channel since it's first appearance .
The origins of the image (and egghead) are unknown but some claim he originates from a Vine or Flipagram.
Appearances (NOT IN ORDER)
A "Hard Day's Work" - Mr Rental: The Video Game (First appearance)
Tong-Nou Theme (Opening Cutscene) -Eastern Mind: The Lost Souls of Tong-Nou
Maroon Valley - CrossCode
Dire, Dire Docks (Original Version) - Super Mario 64
Shellfie (Alternative Mix) - Splatoon
Lucy in the Sky with Dynamites (20. Flashback) - LAST: Dream Emulator
Piccolo's Theme - Dragon Ball FighterZ
Expiration Date ~ Game Over - Egghead: The Video Game
I Love Her [Episode 10] - The SiIvaGunner Christmas Comeback Crisis
Joshie's Shed Shop - Eggnog: The Video Game (Most Recent Appearance)