Sure! Tevrugos sorta abandoned the blue dragonflight during the Nexus War since he thought Malygos was being dumb (the giant castle full of undead was a little bit of a bigger problem, you know.) He traveled to Dalaran, and joined the Kirin Tor under the guise of a high-elf mage named Tevruden Dawnspear and has been there pretty much ever since; studying how mortals approach magic, and eating his way through every restaurant in the city.
After the Nexus War ended, and the blue dragonflight was on good terms with everyone else again. Tevrugos became a lot less secretive of his true identity, so while he doesn’t walk around Dalaran in his real form (he wouldn’t fit) pretty much everyone knows that Tev is Actually A Dragon.