History
Eitri's history is unknown although it can be presumed that it was more or less similar to that of his Earth-199999 counterpart.
Eitri was with Gamora and Iron Man in Nidavellir when he was melting the Infinity Gauntlet, Tony suggested a way to protect the galaxy to combat a future danger before they became aware of the presence of the Watcher who recruited Gamora.[1]