Nexus-Lord Donjon Rade Sr.

Nexus-Lord Donjon Rade Sr. is an NPC added as part of the Legion alpha, serving to teleport players to the dungeons and raids currently available for testing. He can be found in capital cities. He also appeared during the Battle for Azeroth alpha.

Quotes

 * Greetings, and thank you for helping to test the Legion Beta!
 * I can teleport you directly into a number of raid or dungeon instances that are currently open for testing. This is just a teleport, not a match-making service, so i hope you have a party ready to tackle the challenges waiting inside. If not, you might want to check out our new Group Finder feature to find some allies.


 * Make sure you have the selected difficulty you want to test before teleporting, since you may not be able to zone out easily if you need to chance the difficulty setting!









Trivia
Donjon Rade's name is likely a cunning misspelling of "dungeon/raid". He is presumably the father of Nexus-Lord Donjon Rade.