Grimly Feendish (alias The Rottenest Crook in the World) is a British comic book character created by Leo Baxendale in 1964, who originated in Baxendale's comic strip Eagle-Eye, Junior Spy, published in the magazine Wham!
His goal is world domination, which he attempts to achieve using various monsters and outrageous plot devices such as exploding treacle.
[1] The character was revived in 2005 for Alan Moore's six-issue limited series, Albion,[1] where his full name was revealed to be "Grymleigh Gartside Fiendstien".
[2] In 2021, Rebellion Publishing announced that they would be reviving Monster Fun, and that Grimly Feendish would be included in the new issues.
[3] A Monster Fun Halloween Special issue ("Halloween Spooktacular") was published in October 2021, and a new Grimly Feendish story ("Funstation", with script by Ned Hartley and art by Tom Paterson) was included.