Historical clue formulations

• Small superhero whose catchphrase starts "Up and at ’em" — 2026-06-21
• Cartoon superhero with an "A" on his chest — 2023-11-11
• Foe of Ferocious Flea in Hanna-Barbera cartoons — 2023-10-13
• Fighter of Ferocious Flea in 1960s cartoons — 2018-07-07
• Superhero with the foe Professor Von Gimmick — 2017-02-03
• Slight '60s superhero — 2015-07-31
• Ferocious Flea fighter, in cartoons — 2014-08-30
• Hanna-Barbera character — 2008-02-09
• Superhero of 1960's TV — 2007-01-27