CyansWorldCartoon (Formerly DiamondCounter) is an Indonesian (Now Inactive) youtuber. His skill level in all sports is (approximately) Negative Infinity (Does not count on the worst ranked miis board.)
In baseball, he teams up with Dolly the Cat, Maxmillian, 6ix9ine, Dolly the Cat's Clone, Cool Cat, and 4 stupid fans.
He uses his You know what to rally in tennis.
People boo him in the ring in boxing, much like 6ix9ine.
He uses his You know what to hit you in swordplay.
He uses a diaper in table tennis.
He is a secret competitor in cycling, coming 99th out of 98 players, which makes no sense.
When you beat him in boxing, you unlock Maxmillian's Gloves. They will make you smell awful, and you will be weaker.
Once you beat him in swordplay, you'll unlock the option to fight with your You know what.
When you beat him in cycling, he'll be replaced with Dolly the Cat.
When you beat him in table tennis, you unlock the Diaper as an option for the paddle.
He appears as a baby in cry babies
He is an Absolute Beginner Mii.
When you beat him in Wii Party, you can unlock the "You Know what" sub-difficulty.
His Height Value is set to 21 and his weight value is set to 120. (This makes him the fattest mii for his height.)

CyansWorldCartoon's Appearance.
Instead of having a number for his internal ID, he uses the term "4 0 You Know What." he is the only one to use this ID.