CG Midlander

[Warlock]

That's what it seems like, anyway. The "Old" serpent seen in the LL storyline and the "New" serpent share a ridiculous amount of features; the six things coming out of its head, two being much thicker than the others, long serpent shape with two wings, even the red trim on the end of the fins is the same. It's just that the newer one looks more... leviathan-ey.

The biggest clue for me is the Blacksmith quest that, in the English client, refers to seeing "the sea serpent," the German client clearly refers to him by name.

Blacksmith 30 Quest
English: I'm as frightened o' sirens an' fishbacks as the next bloke...but I'd take me chances with a whole horde o' the buggers if it meant never seein' a sea serpent again.

German: Sirenen oder Sahagin ... wenn du mich fragst, ich würde keinem der beiden gerne auf See begegnen ... obwohl das immer noch tausendmal besser wäre, als der Seeschlange oder Leviathan als Häppchen zu dienen.

(Sirens or Sahagin ... if you ask me, wouldn't like to meet either of them at sea ... but that would still be a thousand times better than being appetizers for the sea serpent Leviathan.)

We also know that the sea serpent appeared some time ago - appearing in our echoes, not our realities. The story goes that the ships of Limsa drive it back to the depths, which fits with this line which mentions him by name in

It Kills With Fire:
"Hah! Those wooden-headed tree fondlers will have to do better than that if they hope to play the thalassocracy! All know it was our own Company of Heroes that slew Leviathan, and it's plain the Gridanians seek to supplement their feeble ranks with allies who might feasibly contend with a primal."

Here is more proof of old model Leviathan: 7:43 in case video doesn't load at that time.
http://www.youtube.com/watch?feature...81SokFA#t=459s

EDIT: Erm a couple mins later he shows the new Leviathan as well..what's this supposed to mean...