As for the character design you're asking, you'll probably: a) recruit/hire someone to help you; b) practice drawing yourself.
As for A, check the project recruitment forum:
forums.rpgmakerweb.com
Or the classifieds:
Post your services and/or hire people to help with your game. This is only available for Veteran members that have about 30 posts or so.
forums.rpgmakerweb.com
As for B, this might be tricky since I don't what you vision for the characters, but in general:
- Make some paper sketches to have a general idea of the poses and looks of the characters
- Translate those sketches to any software of your like (If you need suggestions, either Paint Tool Sai or MediBang Paint pro are both free drawing software)
- For documentation or post editing paint.net or photoshop (if you have it)
Again, I don't what you're looking for regard on style, ambience or story wise stuff, so I can't give much of an advice like this. Feel free ask.
Also don't know if might help but here you have a thread about generator parts:
Inspired by slim's list I now digged up my motivation to build up a list I wanted to to for some time... Charsets XP Generator Character Maker XP Chargen Extended (also Generator Parts) HBGames online Generator Moonpearls RGSS Char Generator (also Generator Parts) XP Charset Generator ...
forums.rpgmakerweb.com
Ojalá te ayude de algo
