In version 1.x, only Humans were allowed to be rangers. For version 2.x we have removed that restriction. Note that if you are using Android, we will be releasing version 2.1 within the next few days. If you are using iOS and would like to try a beta, email me at
oubliette@gabysoft.com and I will set you up.
As for the Kobold Peasant, well that combination will be the easiest to level. Throw some good equipment on him and he would probably make a pretty decent fighter. I myself have built an entire party of Kobolds (2 Hirebrands, 3 Mages, 3 Priests and a Thief) and am trying to level them to the point where they can beat level 11.