The Fearsome Five: Frances "Pip" Pumphandle, Mr. Director (and his various incarnations), Baloney, Elmyra Duff, and Prunella Flundergust.
FYI, I only listed the 'Fearsome Five' because they were the only five characters who could give the Warners a run for their money in terms of zany-ness.
In fact, I kind of felt sorry for the Warner trio in having to deal with the 'Fearsome Five', because no one--in their right mind or in their not-so right mind--would want to be stuck with them! ^_^
Down with Katie Ka-Boom, man!