Like any wolf, Skoll & Hati hunted but their game was bigger, it was to Signal Fenrir to start Ragnarok though they never agreed on how or if they should.
It was foretold that when Hati and Skoll succeeded in swallowing the Sun and the Moon, sending the whole world into blackness, this signaled Ragnarok looming large.
Skoll breaking out from his mortal form, Iki. Sköll is the white wolf spirit and the sun guardian, also Hati's brother. While Hati wants to buy more time for the world, Sköll prefers it to die and have at least one more happy life before it does.