The DM makes it up. A +2 AC bonus -- a number I just pulled out of my pee-pee -- is something that a player is not going to complain about, and that is the primary criterion. Adjust as needed to fit your players' sensitivities.Kraydak said:I know. I thought I remembered him also saying that they had gone through and made sure that the humanoid types made sense. Clearly not. Why should you care? Meepo. Imagine your party adopting a kobld and trying to put armor on him. It has happened. In 3e, it happened enough times that Meepo became an iconic figure. (Also note that for at least one of the kobolds, that "special effect" is armor *reducing* your AC )