FIRE: SMAUG
Wyvern
The Wyvern is a highly sought-after massive flying dragon that can overpower most creatures it faces. The deadly Wyvern, which is only tamable by stealing and raising as a baby, can be found in four varieities — Fire, Ice, Lightning, and Poison — each of which have distinct attacks.

Name ideas for your Wyvern from ARK players.
Fire: Burnie Sanders
Ice wyvern “where’s my super suit”
Ice- Ice Ice Baby,Vanilla Ice
Lightning Thor
For Fire and reddish-orangish scales: Vulthuryol
Trogdor!!!
Odahviing
Durneviir
Ice-Lumimyrsky
Fire-Tulimysky
Poison-mykryllistämyrskyä
Thunder-Ukonilma
Names mean element and storm
Lightning-Circuit
Poison-Toxin or Stinger
Forest Wyvern: Peril
Flamefaze
Poison Loki lighting Thor fire Odin
Zeus [if Lightning]
If Lightning: Shazam
Poison: Toxin
If male lightning (Bolt)
Eugene
Lightning: Joules, Volt, and Ohmega