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Toothless' s enemy is a Whispering Death that appeared in the Riders of Berk episode What Flies Beneath.


He is a large Whispering Death who has had a conflict with Toothless sometime in the past. He has a Night Fury bite mark on his side, made by Toothless in the past. He is also shown to be quite merciless, like all dragons with grudges, as shown when he was trying to shove Toothless off a cliff.


  • He is the first Whisering Death in the series and the first to make a physical appearance in the franchise.
  • It is possible the Whispering Death could not be trained by Hiccup because he picked on Toothless' scent from the Viking. He does seem to attack Hiccup more directly afterwords.