Captain Falcon?

In what way can you make him rich? You earn money in the game?

no

We don't earn money. I am gonna say what we do in the game to be rich. We do mining in game. (I put spoiler tag because it makes so easy to guess. Just look at it, it's not actual spoiler to game. Actually the game nearly has nothing to spoiler.)

Hercules from the PS1 Disney Hercules game? He punches and uses weapons, carries huge things and becomes a hero which probably means being rich.

no

Hint: It is a playable character and you can change it to an another character named Alex and much more other characters. You can make your character too. But changing characters doesn't change anything in game.

Sounds like Steve.
Then he's one of the strongest videogame characters because of the fact that he can carry many "heavy" items in his inventory?

Nah, he said it would make it too easy to guess so I avoided it.
Being able to change the charater to Alex and also make a new one plus the fact that it doesn't change anything in the game sounded too much like MineCraft


I want to make one as well:

-White haired edgelord
-His attacks are very fast but each one of them is weak
-He can teleport to the enemy he has just attacked after using any special ability and use another one without the "starting" animation in certain conditions, making him the most broken character in the game

Yes, you are right.

Sounds like Sephiroth to me. You know, the white haired edgelord thing?

Don't forget he also can teleport in anywhere. And yeah is broken

It's not Sephirot.
Now I realize these last 2 hints were too specific lol. Let me add two more:

-Seeks vengeance
-He's based on a real person

Dante?

Nope

Asura From Asura's Wrath? He's a whitehaired edgelord seeking vengeance who's based off of the real Asura in Hinduism. (Never played the game cuz I don't have the console so don't know s*** about the gameplay hints)