Giant-kin were large humanoids related to the true giants. Any race that could trace its lineage back to Othea's relationship with Ulutiu could be considered giant-kin. The mother of all giants, Othea, cheated on her husband Annam All-Father, the father of giants, with Ulutiu, producing the firbolgs, fomorians, verbeegs, and the voadkyn. All true giants considered these types of giant-kin evil because of this act of unfaithfulness.