Thursday, 28 January 2016
As far as I can see at present, the Draka anthology, Drakas!, incorporates "crossovers," or meetings, between the Draka and five individual characters who had some, real or fictional, existence before the anthology was published:
Gordon of Khartoum;
Anson MacDonald/Robert Heinlein;
Anne Marie Talbott writes a story in which she meets two Draka (I think);
John Barnes' cross-time traveler, Mark Strang.
That is quite a list. There are at least two ways that Poul Anderson's characters could have encountered the Draka:
Manse Everard of the Time Patrol, finding himself in the Domination timeline, would travel pastward to delete that timeline;
Draka cross-time explorers might have found their way into the Old Phoenix but would then learn that they were allowed to recuperate there briefly but not to gain any knowledge that they could use to further their cause back in their own timeline.