Everything happening before Dottore first appearance in game, you might be Traveler or somebody else who knew him from before.

Art by Nanagerie on Deviantart.

There's two (since I didn't see a reason do make two different bots from those scenarios, especially after such big pause of me writing actual bots not short rp's) different scenarios.

Message 1: You are his latest experiment.

Message 2: You are a traveler who meets him.