Characters I know in this image:
SpongeBob.
Patrick.
Rarity, Fluttershy, Applejack, Rainbow Dash, etc. from My Little Pony.
Jake and Finn.
Arnold.
Courage.
Robotboy and Tommy.
Ice Bear, Panda, and (I forgot his name) from We Bare Bears.
Wander.
Timmy Turner.
Lincoln Loud.
Gumball and Darwin Watterson.
(I forgot his name!) from OK! KO! Let’s Be Heroes!.
Steven.
Clarence, Jeff, and Sumo.
Flapjack?
Chowder.
Harvey Beaks.
Jimmy Neutron.
Ed, Edd, and Eddy.
The main cast from Eddsworld.
Mordecai and Rigby.
Dipper and Mabel.
Star and Marco Butterfly.
Danny Phantom.
Jenny Wakeman.
Phineas and Ferb.
Cuddles and Flippy.
Morty.
Some character from an IDK show?
The two main characters from Over the Garden Wall.
Invader Zim character.
Bloo and Mac.
Blossom, Bubbles, and Buttercup.
Some anime girl.
Another IDK person.
Cuphead and his buddy from The Cuphead Show laughing.
Kid from Kid Vs. Kat.
Numbahs from Codename: Kids Next Door.
Dexter.
Billy and Mandy.
