Dude, seriously? You haven't even tried. Draw the whole character and don't worry about style. We can't critique something that doesn't exist yet.
Considering 1) you want to make a game and 2) you aren't comfortable drawing a single character, making a list of characters to put in your game should be the last thing on your mind.
If you don't have any ideas for the protagonist's design, try describing him in as much detail as possible and then collecting reference pictures that exemplify that description in some way or another.