Historical clue formulations

• "I'm hunting wabbits" speaker voiced by Mel Blanc — 2025-08-18
• Archenemy of Bugs Bunny ... who might say things like 17-, 24-, 32-, 42- and 51-Across — 2017-02-14
• Bugs bugs him — 2003-03-17
• Cartoon character with a big gun — 1997-12-16