Garmr

Bruce Lincoln brings together Garmr and the Greek mythological dog Cerberus, relating both names to a Proto-Indo-European root *ger- "to growl" (perhaps with the suffixes -*m/*b and -*r).

[1] However, Daniel Ogden notes that this analysis actually requires Cerberus and Garmr to be derived from two different Indo-European roots (*ger- and *gher- respectively), and in this opinion does not establish a relationship between the two names.

[2] The Poetic Edda poem Grímnismál mentions Garmr: The best of trees | must Yggdrasil be, Skíðblaðnir best of boats; Of all the gods | is Óðinn the greatest, And Sleipnir the best of steeds; Bifröst of bridges, | Bragi of skalds, Hábrók of hawks, | and Garm of hounds.

Bloody he was | on his breast before, At the father of magic | he howled from afar; Forward rode Óðinn, | the earth resounded Till the house so high | of Hel he reached.

[8] In episode 12 of the anime The Most Notorious "Talker" Runs the World's Greatest Clan, the new group Wild Tempest must fight in the Quartz Valley against Garmr, who is a rank 9 beastly dog.