Draconians were apparently among those who tried to imprison the Doctor in the Pandorica, but the concept of everyone in the universe gathering together at one time, before most were active, was just ridiculous.
The Doctor's had a good deal of contact with Draconians, but they may know him more than the Time Lords. In this far future, Sereth's Draconians have been around a long, long time, so they could have learned an awful lot, but yes it could be so old as to be myth and legend.
Draconians got some attention in the novels and comics.
http://tardis.wikia.com/wiki/Draconian
The Japanese theme is a common one. IIRC, Kaon:
http://tardis.wikia.com/wiki/Kaon
had a katana in addition to his "shurk'n" and sai:
http://tardis.wikia.com/wiki/Shurk%27n
I should go through my old DWMs to find his stories to confirm.
This message was last edited by the player at 13:41, Tue 24 Dec 2013.