Fire Dragon (Marvel Cinematic Universe)

The Fire Dragon is a minor antagonist of the 2017 Marvel film Thor Ragnarok. It is a giant dragon that serves as the pet of the fire demon Surtur.

Role
During his confrontation with Surtur about the impending event known as Ragnarok, Thor managed to release himself from his imprisonment by Surtur, who then summons his fire demons to take down Thor. Eventually, Thor used his hammer to take down the demons before defeating Surtur and taking his crown. Upon witnessing this, the angry Fire Dragon free itself from its chains, intending to kill Thor in revenge for its master's death.

When Thor called for the Bifrost Bridge to open in order to escape, the Fire Dragon managed to catch up with him. Needless to say, Skurge is currently the new Guardian of the Bridge and he was busy flirting with several Asgardian women until they gave him Thor's message. Without hesitation, Skurge managed to open the Bridge to let Thor return to Asgard, but this accidentally sliced the Fire Dragon's head over the floor, killing it and spilling its yellow blood all over Skurge and the Asgardian women, who left in a huff.