If you read all of the Dreams of Alpha Lupi cards, it seems fairly certain that she is the Traveler. But yes, it has not been 100% confirmed
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I agree that it's most likely Here's the real kicker though, assuming that Alpha Lupi does=Traveler, why should we trust it? Are said "dreams" from before or after the collapse? By this I mean did the traveler pick humanity because it actually saw something in us that made it believe it could defeat the darkness, or because it had no choice?