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Worldwide, Keins (เคน , Кейн , Keins ) is a rare mostly male, but uncommonly girly forename. The forename Keins is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare largely boy's, but infrequently girly name. Very seldom, Keins is the last name as well as the forename.
Keins is also a name for the fictitious and mythical characters: Cain , the Biblical figure, Cain; Juggernaut , the fictional character in Marvel Comics, Deadpool 2; Kain , the title character of the Legacy of Kain series, Blood Omen: Legacy of Kain; Cogliostro , the Spawn character and Cain , the DC Comics character, Lucifer, among other works.