Notes:

This is the final upload I swear
First row: Rocko, Doug Funnie (Doug Walker), Arnold Shortman, Tommy Pickles, Ickis
Second row: Timmy Turner (live-action version), Raphael (Renaissance artist), Fanboy (Freakazoid!), Hugh Neutron, Kid Danger
Third row: Tito Makani, Jimmy Neutron, Free space!, Squidward Tentacles, Otis
Fourth row: Sheen Estevez, Daggett Beaver, Heffer Wolfe, Jenny Wakeman, Harvey Beaks
Fifth row: Dudley Puppy, Donatello (Renaissance artist), Angelica Pickles, Rudy Tabootie, Ronnie Anne Santiago