[1] His appearance remains unclear, but he is described with several epithets: partalainen (the one who lives on the brink, or alternatively, the bearded one), Tuonen härkä (the ox of Tuoni, Death), tuhatpää (thousand-headed), tuhatsarvi (thousand-horned).
Some runes tell that Meritursas partalainen makes pregnant the Maiden of Air (Ilman impi, Ilmatar).
Later, Iku-Turso is summoned by Louhi, the Lady of the North, to stop the theft of the magical artifact Sampo.
Väinämöinen, the leader of the plunderers, grabs Iku-Turso from his ears and using magical words makes him promise to never return from the bottom of the sea.
[1] Other things named after the mythical being are the Asteroid 2828 Iku-Turso and a Finnish metal band Turisas.