So I try to find a system that can do this. Enter Macchiato Monsters, I had this RPG for quite sometimes but doesn't actually read it until a few months ago. The character making system is what I was looking for. It's classless and can actually make character you want including alien!
So I've been tweaking it and fusing it with Metatoy as both use OSR-like system and also because of six-sided dice (the only dice sold here).
Well, nothing happen because it clicked, I have network of RPG designers and players to help me! A lot of them comes from EPGames FAN facebook including Khairul Hisham and Rafael Beltrame. Thanks, guys!
Below are some characters I made using the system I made, just to make sure that it can. Oh, Rafael made Chompbacca a sidekick pilot. Please enjoy!