Crossword clues for the word: SIDESHOWBOB The word SIDESHOWBOB has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for SIDESHOWBOB Showing 1 to 5 of 5 results Clue(s) """Simpsons"" character voiced by Kelsey Grammer" "Red-headed toon villain on ""The Simpsons""" Bart Simpson's murderous nemesis, a recurring character on "The Simpsons": 2 wds. Krusty the Clown's sidekick on 43-Across: 2 wds. Krusty's co-star