Beings by theme
shape-shifting
- Ulster Cú Chulainn Cú Chulainn, born Setanta, is the supreme hero of the Ulster Cycle: a semi-divine warrior fated from boyhood to undying fame and an early death, who defends Ulster single-handed in the Táin Bó Cúailnge.
- Cross-cycle Manannán mac Lir Manannán mac Lir is the pre-eminent sea-god and Otherworld king of Irish mythology, lord of Emain Ablach and the Land of Promise, and the great magical armourer of the Tuatha Dé Danann.
- Cross-cycle The Merrow The merrow is the Irish mermaid and merman of folklore, a dweller in Tír fo Thuinn, the Land Beneath the Waves, who crosses between worlds by means of a magical cap, the cohuleen druith.
- Cross-cycle The Morrígan The Morrígan is the shape-shifting Irish goddess of sovereignty, battle, fate and prophecy, one of the Tuatha Dé Danann.