I'm going to be doing a video game character tournament for myself, just as a little fun project, and I was wondering which of these three options would be the best/most interesting/most fun way to go!

Note that only my favourite characters from each game will be used. It will be between 2 and 4 characters per game. So when I say characters, I mean my favourites, not every character from the game

Option 1: Random Drawing
Put all names in a hat, pick them out and make brackets

Option 2: By game
Start by doing brackets within each game until left with only 1 character per game. Then I can go by series until 1 is left per series. And then do a random drawing with the winners

Option 3: By group
Have different groups such as archer characters, characters from fighting games, black mage type characters, animal characters, etc. Do brackets until 1 is left in each group and then do a random drawing with the winners

Thanks for the help in deciding