Here he comes to save the day, and alter your DNA after nominal exposure: it’s Atomic Mouse! You can understand why kids liked characters like this; they reassured the child that your size doesn’t matter. You can be small and still save the day. Upside: everyone loves you because you’re atomic and cute and heroic. On the other hand, when your plague-bearing fleas mutate into super-lethal strains, you’ll burn through that goodwill pretty quickly.
These are very specific character archetypes, and any child would have known their attributes by their headgear. The wolf with a shabby top hat, for example, is probably the bad guy – a hapless, scheming trickster who got his chapeau out of a dumpster, and thinks it bestowed class. The cat’s cap indicates that he’s an okay joe, a good yegg from the nabe, a scrapper and a tough guy you want in your corner if’n you gets into a scrape. The small young white mouse has no hat, because his character is still forming. The dog with a moustache – I repeat, the dog with a moustache – is wearing a mortarboard, which indicates Professor status, and hence high intelligence. That’s how smart people dress: they wear black robes and mortarboards and walk around the campus conjugating equations, or something.
Good ol’ Charlton comics: your choice for substandard knock-off dreck. Except for the mid-60s Ditko Blue Beetles – but that’s another day.