Lava Serpent.
The Big Bang Theory Season 3, Episode 5
Thor will kill the SERPENT
but die from its venom.
Vikings Season 1, Episode 6
The SERPENT and the old woman.
The Big Bang Theory Season 4, Episode 22
and the SERPENT slithered free
Vikings Season 1, Episode 2
Midgardsormen,
the world's SERPENT,
Vikings Season 1, Episode 6