character writing tips

okay so:
**MEMORABLE CHARACTERS**
there's a lot i could say on this, a bunch of which is so deeply engrained into my mind i don't even know how to really put it into words, but here's some pointers:
1. make sure your characters don't rely on a single personality trait to convey who they are. it's okay for a character to have a central trait--most characters, and, hell, a lot of people in general do have these--but it shouldn't be their only defining characteristic. you don't want a character who is "happy", you want one who is "joyous, energetic, warm".
1b. it can be hard to remember these sorts of traits in the moment if you either write in heat of passion or roleplay, so i recommend making small references for each trait alongside a single word, such as this: (Energetic) "I hate it when I stop moving around, constantly bumping to the sound of some music nobody else can hear, or just moving my hands around idly."

2. contrasting characteristics and flaws are interesting, though make sure to not overdo it. going with the earlier example of a character who is joyous and such, maybe they have a huge fear of failure. this fear might be so large that they rarely try to do anything creative--or at least, they might not show their creativity to the public eye, instead keeping it under lock and key--or perhaps not. it really depends on how serious and tragic you want the character to be for your story; for something less serious, flaws should still exist, but they don't have to be crushing or lead to something extremely terrible for the character.
2b. re-iterating on the don't overdo it; the only thing worse than a character without any negative traits is one without any redeemable ones. it just gets boring and depressing to watch such a character interact with others, and making everything around them feel like utter shit.

3. don't base a character entirely on some kind of gimmick *unless* that character will only be used for a brief period of time; in TV terms, i'd say an episode to half an episode is a good bet, while in a roleplay or d&d adventure, usually no more than one session to an hour or two is good. if a character's only defining feature is that they're the god of gambling or some shit, and they have no other defining parts of them besides they own a casino or some shit, that isn't great for character interaction with them. it's just bland.
3b. i will mention that for characters who don't interact with others as much (such as a "looming presence" type of villain), this can be done, however it still shouldn't be relied on too often.

4. don't be afraid of tropes! the thing a lot of people hate with tropes is that they're all done poorly, however, the reason they *become* tropes is because it's worked a lot of times in the past. if you want to use a trope for a character, or if using a trope would fit a character so well, don't subvert it just for the sake of subverting it, unless you legitimately believe that it would make the character be better in the end to do so.
4b. while you shouldn't be afraid of tropes, you also definitely shouldn't rely on them heavily, unless you become *extremely* talented at writing characters. subverting tropes can be good for making unique characters, however it shouldn't just be the exact opposite of the trope; instead, it's more interesting to do a shade of grey, where it's somewhere inbetween the exact opposite and what's entirely expected.

5. all creativity is derived from something else. aka if a character does something interesting in their personality feel free to nab that bad boy ***PROVIDED YOU DO SOMETHING NEW WITH IT***. it's completely fine to make a skeleton character who is generally apathetic, but it's not a good idea to make him literally sans, especially in design. an interesting idea might to be to pervert some aspects of that character's original personality, such as making a skeleton who is generally apathetic to what goes on, but is also fairly expressive of his opinions of the world around him, and inspires others to fix things that he's otherwise too lazy to do.

**GOOD DESIGNS FOR CORRUPTION THINGS**
i don't entirely know what you mean by this so i'll just ask you to elaborate