>>hero is always and outcast/has to stay hidden
Because of supervillains trying to kill their family or whatever. It's usually pretty justified.
>hero is always much smarter and/or stronger than the average person
Literally older than writing, let alone judaism. I suppose Girugamesh was a jew, too. Jesus had superpowers like multiplying loaves and fishes, and even resurrection. I bet he was a jew.
>hero is the only one who people rely on to save them/the world
Shared universes are a big part of superhero stories, so not really. There are always many heroes.
>villains are usually misunderstood or have good intentions, but are deemed abjectly evil anyways
A relatively new invention that only really started in the 1970s. Magneto is the example always cited, as Chris Claremont made the X-Men a metaphor for the civil rights movement. Stan Lee claims this was always intended. If it was, then Magneto's group wouldn't have been called The Brotherhood of EVIL Mutants. Lex Luthor nowadays has all sorts of good reasons to hate Superman, from fearing any individual having that much power, to worrying that he's the first part of an alien invasion force, or thinking that humanity's reliance on Superman makes them not reach their full potential. But back in the day, he was just mad that Superman made him bald when they were kids. And before that, before an artist accidentally drew him bald when he was supposed to have hair, he just plain wanted to take over the world.
>sidekicks are usually effeminate young boys
Good point. That's funny enough that I want to just agree with you. But obviously the real reason is because Robin and the many derivatives are all supposed to be audience avatars, and the audience was supposed to be a bunch of 11 year old boys. There were girl comics about romance and stuff, but the Comics Code banned them for being too sexy, along with banning essentially any genre other than superheroes.
TMNT aren't strictly DC/Marvel, but they're obviously superheroes. Is Spawn not a superhero just because he's not DC or Marvel? You'd be surprised the amount of characters that are now technically DC, but weren't originally. And besides, the TMNT are sorta Marvel. They got their powers from the same chemicals that hit Matt Murdock in the eyes and turned him into Daredevil. And were later retconned to also hit Jessica Jones and give her powers, but fuck Jessica Jones.
Kat was incredibly refreshing. With all the deconstruction of superheroes going on since the '80s there has also been reconstruction in the comics but it hasn't found its way to adaptations, and with feminism making sure that female superheroes in particular are always actually awful people with chips on their shoulders, it was really nice to see a female superhero who was simply a nice person, and doesn't have any stupid parts where she has to fight the patriarchy or some shit. She still has some emotional depth related to her backstory and circumstances, even if it's not super angsty or anything. Kat is best superhero and best waifu. I wish we would get Gravity Rush 3, but I know it will never happen.
Kat actually goes out of her way to help random people with random things, which I think makes her much more of a superhero than the saiyans, who save the world, but only as a side effect of wanting to beat up strong guys.