The one that will be "the snatcher of the moon" is Mánagarmr (or Hati), and the "old woman" may refer to Fenrir's mother Angrboða.
Known as "The Body Snatcher", he was a contestant on reality TV show The Next Great Champ on Fox and was eliminated from the show after being KO'd by Gilbert Zaragoza.
He also has recognisable cameos in Ganbare Goemon 2: Kiteretsu Shōgun Magginesu for the SNES, Snatcher for the Mega-CD, Jikkyō Power Pro Wrestling '96: Max Voltage for the SNES, Mitsumete Knight for the PlayStation, and a figure resembling him also appears in an alternate ending to Contra: Shattered Soldier for the PlayStation 2.
The Bone Snatcher is a British-Canadian horror film based on a screenplay from Malcolm Kohll and Gordon Render, the film was directed by South African filmmaker Jason Wolfsohn and stars Scott Bairstow, Rachel Shelley and Adrienne Pierce.