A Gancanagh (from Irish: Gean Cánach meaning "love talker") is a male faerie in Irish mythology that is known for seducing human women. The Gancanagh are thought to have an addictive toxin in their skin that make the humans they seduce literally addicted to them. The women seduced by this type of faerie typically die from the withdrawal, pining away for the Ganacanagh's love or fighting to the death for his love.
The púca (or pooka, phouka, phooca, púka; Irish for goblin) is a creature of Irish folklore and Welsh mythology, one of the myriad fairy folk, both revered and feared by those who give credence to their existence. Their belief extends as far as the West of Scotland. In Cornish folklore it's the Bucca.
Selkies (also known as silkies or selchies) are mythological creatures found in Faroese, Icelandic, Irish, and Scottish folklore. The word derives from earlier Scots selich, (from Old English seolh meaning seal). Selkies are said to live as seals in the sea but shed their skin to become human on land. The legend apparently originated on the Orkney and Shetland Islands.
Áine is an Irish goddess of summer, wealth and sovereignty. She is associated with midsummer and the sun, and is sometimes represented by a red mare. She is the daughter of Egobail, the sister of Aillen and/or Fennen. As the goddess of love and fertility, she had command over crops and animals and is also associated with agriculture.
In Celtic folklore, the Irish Leannán Sí "Barrow-Lover" is a beautiful woman of the Aos Sí (fairy folk) who takes a human lover. Lovers of the Leannán Sídhe are said to live brief, though highly inspired, lives. She is generally depicted as a beautiful Muse, who offers inspiration to an artist in exchange for their love and devotion; however, this frequently results in madness for the artist, as well as premature death.