Kveldulf are two-headed, two-tailed gray monsters whose front half is wolf-like and back half is that of a zebra. They are large, around the size of a draft horse . They spawn in a cave west of Gunnar's Hold in the Norrhart Domains. The cave has a posted notice outside it that says "Warning to Travelers".
- "Kveld" is the Norwegian word for evening, and "Ulf" is a Norse given name meaning wolf. Together it means "Twilight Wolf" or "Night Wolf."
- On the first day of the GW:EN Sneak Peak event the Kveldulf were called Fenrir Spawn. Their names were changed the next day.