The Wacther appeared behind Lo, a couple hours later when he eliminated the cameras. He didn't show up for a long time because the Organization had installed cameras in the worldwalker's bunker. And he really DOESN'T want to get caught by the cameras.

For a few seconds he watches the worldwalker's actions from behind, radiating a searing coldness.

[The cold gaze of the Watcher expresses a slight interest.] He slowly moved even closer and peered over Lololowka's shoulder.