The Ren & Stimpy Show
Fat Guy

Rocko's Modern Life
Donald Frump | Dr. Bendova | Driver | Flecko | Granny Rocko | Judge Sockner

CatDog
Hound Dog McDog | Pussycat Catfield | Bartholomew | Cornelius Sunshine | Fleas | Lube | Mindy Wonderful | Randolph Grant | Teacher | Wolfington

The Fairly OddParents
Big Daddy | Mama Cosma | Tad and Chad | Trixie Tang

My Life as a Teenage Robot
Mr. Mezmer

Drake & Josh
Susan | Alice Hayfer | Ms. Hunter | Corey

Danny Phantom
Dash Baxter | Kwan | Paulina | Star

Avatar: The Last Airbender
Hahn | Hide

iCarly
Mr. Howard

Barnyard
Nathan Randall Beady III | Freddy's Mother | Mountain Joe | Prunella

The Legend of Korra
Lu and Gang

100 Things To Do Before High School
Fenwick Frazier | Crispo

See Also
Hey Arnold! Antagonists | Jimmy Neutron Antagonists | Rocket Power Antagonists | Rugrats and All Grown Up! Antagonists | SpongeBob SquarePants Antagonists | The Loud House and The Casagrandes Antagonists | The Wild Thornberrys Antagonists