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openCast differentiation Print Comic
This is a pretty common trope in comics, but can apply to anything with superheroes. It's basically what happens when you gather several superheroes together and the only other way to tell them apart aside from their superpowers was their personalities, so a certain aspect of them gets exaggerated when they're in a group.
Compare the shows Superfriends to Justice League. Superfriends was pretty bad about this since all the members had the same personality with different tights, but when you look later in Justice League you'll notice that there's a lot of different personalities that contrast well with each other. Flash tends to be a lot cockier and reckless with the League than when he's solo. Batman tends to seem gloomier and darker when compared to the League, etc.
openBlack Sabbath's Iron Man: Bootstrapped theme? Print Comic
So we know Black Sabbath wrote Iron Man completely independent from Marvel Comics and originally had nothing to do with him, but in time it eventually became Tony Stark's de facto theme. Odds are when people think of Iron Man's theme, they'll be thinking of those riffs. Does it count as a Bootstrapped Theme if a song that was originally written independently of a franchise/work/character/etc. practically becomes its theme by pure accident or is this a completely different trope?
openA character thinks really hard and really long while walking in circles. Print Comic
And they do it for so long that their walking eventually starts carving a circle into the ground/floor/whatever they're walking on. I've seen it countless times in Donald Duck comics.

Do We Have This One The Beano recently added a new character. Her name is Hayley Comet, a pun on Halley's Comet, and she's a little girl who crashed her spaceship and enrolled at Bash Street School to learn about human behaviour. She has blue skin, but being a child definitely wouldn't count as a Green-Skinned Space Babe. So what trope is she? Her other defining features are a pair of rocket boots (which allow her to fly) and a pair of orange braids.