Who was the first being, a frost giant?

The first frost giant in Norse mythology was Ymir, also known as Aurgelmir.

According to the Prose Edda, Ymir formed when heat from Muspell melted the ice and rime of Ginnungagap. He is described as a primordial being and the ancestor of the jötnar, often translated as giants. More specifically, he is linked with the hrímþursar, or frost giants.

Ymir’s strange reproduction begins the giant lineage: while he slept, a male and female emerged from his armpits, and his legs produced another being. Meanwhile, the primeval cow Audhumla nourished him with milk and uncovered Búri from salty ice. Búri’s descendants included Odin, Vili, and Vé.

The gods eventually killed Ymir. His blood caused a great flood that destroyed most of the giants, and Odin and his brothers used his body to construct the cosmos: flesh became earth, bones became mountains, blood became seas, and his skull became the sky.

Ymir is sometimes called the first being, but the myth also places primordial realms and forces before him. In quiz usage, however, Ymir is the canonical answer for the first frost giant.