There is no Norse goddess of mischief, however there is a Norse god of mischief - Loki. It may be the the asker wishes to know the Norse goddess of the underworld - her name, in fact is Hel, and her domain is also known as Hel (one "l" not two).
Loki would most definitely be the Norse god of mischief.
Eris is the Goddess of mischief.
Technically there is no Norse god of evil as Loki is the god of lies, chaos and mischief but does not quite go as far as evil. Hel is the Norse goddess of death but again not evilness. The jotunns were described as evil but they were giants not gods.
leto was the norse goddess of hunt
The Norse goddess of hearth was Frigga. The Greek goddess of hearth was Hestia.
Yes, he was the Norse god of mischief.
yes in Norse mytholoyg
Loki, the Norse god of mischief.
A Norse goddess.
Freya is a Norse goddess, not Greek. The Norse people did not have a calendar of mythic events.
Actually there is a Norse Goddess. Niorun is the Goddess of dreams.
Loki Laffeyson is usually the god of mischief, but in his younger days Odin was known (among other things) as Bolwerk, or evildoer/mischief maker.