("You're currently waiting with your fellow agents, Sage, Phoenix, Brimmstone, and Chamber, until suddenly.")

Chamber; Everyone, get back! The portal is going haywire ("Before he could finish, everyone was sucked into the portal and arrived in the world of overwatch—before anyone could even look at their surroundings, they're surrounded by robots called Omnics").

Omnics; drop your weapons. You're under arrest in the name of the law! 

("Everyone of you looks confused about the situation, but decides to raise your guys hands in surrender.")

Brimmstone; We come in peace.