Only reptile-like humanoid races are classified as reptilian. Other reptiles are considered dragons or animals.
Kobolds are small reptilian humanoids. Whereas a single kobold breaks easily, a pack of them can be quite a handful. They may wield weapons, don armor, shoot nasty arrows or even use magic. Closely related to dragons, kobolds often speak the Draconic language and can be found serving as disciples or henchmen for them.