According to Goblin Fortress, the relation is this:<br/><br/>Imports from the kobolds: petty annoyance<br/>Offers to the kobolds: death<br/><br/>So I haven't seen them work together in that. In D&D? Hard to tell. They both tend towards being nasty little evil buggers, but that doesn't mean they're friends - it COULD be a common point, or it could be an excuse to fight. Best not to try stirring them together.