The Fir Bolg are a faction in City of Heroes, native to the Croatoa area. They may be related to the Fir Bolg of Celtic lore. They are deeply magical creatures. In times of old, the Fir Bolg battled the invading Tuatha de Dannan for control of Ireland. Here in Croatoa, history seems to be repeating itself. The two tribes, transported across an ocean and transformed into monstrous shapes, are waging an eternal war.