Each day in June you'll get an entry showing you the first appearance of seemingly minor characters, phrases, objects or events that later became notable parts of comic book lore. Not major stuff like "the first appearance of Superman," but rather, "the first time someone said, 'Avengers Assemble!'" or "the first appearance of Batman's giant penny" or "the first appearance of Alfred Pennyworth" or "the first time Spider-Man's face was shown half-Spidey/half-Peter." Stuff like that. Here is an archive of what I've featured so far.
Today is a super-pets edition!
Enjoy!
First Appearance of Krypto
In early 1955, we met Superboy's pet dog, Krypto, in Adventure Comics #210...
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First Appearance of Ace, the Bat-Hound
A few months later in 1955, Batman also found himself a pet dog in Batman #92...
Gotta love how Ace wears a mask to hide his identity.
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First Appearance of Streaky
Streaky had to wait a full five years before he made his debut in 1960's Action Comics #261...
Linda adopts the cat and names him Streaky.
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Feel free to send in ideas for future debuts I should feature here to bcronin@comicbookresources.com!