Mr. Hardy Har Har is the owner of the joke shop who works with the villains, Blake Midwinter, Nasal, Olive, Cuthbert, Teacher, Headmaster, Janitor, Winston, Slasher Brown, Slasher Brown's Henchmen, Posh Penny, Godfrey, Soldiers, Mr. School Inspector, Captain Prefab, Katzenberger, Mr. Dust, Sgt. Slipper, Hugo Trenchfoot, Vilhemina Slop Bucket, Mrs. Creecher, Fatty Fudge, Fatty Fudge's Son, Reg Trademark, Captain Trout, Aunty Fanny, Aunty Gertrude, Sard, Mrs. Duffel, Mrs. Greature, Sir Fitz-Patrick Flush, McInk, Dr. Paeleo and Monsieur Torte-Visage. He also appeared in the two Dennis the Menace and Gnasher episodes that are "No Joke" and "You're Joking!".