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Lorelei - Asgardian - was created in 1984.
Yes, an Asgardian can be killed, they just can't die of old age.
An Asgardian is a native or inhabitant of Asgard, the realm of the Aesir gods in Norse mythology.
Only upgrade to Asgardian set from Valhalla set if you have enough to buy the entire Asgardian set.
lorelei