Guardians of the Galaxy Season 3 Episode 25 Killer Queen Episode Title:Killer Queen.Episode Description:The final Dragonfang fragment is in Niffleheim where Hela rules and where nobody has ever made it out alive. With Hela bitter that Odin banished her after Dragonfang broke on Serpent, Loki plans to use his charms to persuade Hela to help them fight Serpent. Even when Dragonfang is reforged, Hela is shown to have Serpent as her guest so that he can obtain Loki. Though Hela will not give up Iron Man or Dragonfang. With the rest of the Guardians of the Galaxy imprisoned, Hela keeps Rocket as a lap dog so that she can have him open the box containing her full power and her way out of Niffleheim.