Kobolds are often thought of as demons. Technically they are not, but they sure do look like they could be. One reason this myth may propagate is because kobolds are completely immune to death effects (Slay Living for example). Kobolds are fairly weak and ugly compared to humans, but they have very high vitality and fairly good dexterity. Kobolds are also lacking in empathy. Their smaller size also gives them a good advantage for dodging attacks. Because of all these factors, they can be quite hard to kill with straight attacks!