Gakin the Darkbinder is a level 50 quest giver located in the Slaughtered Lamb in the Mage Quarter of Stormwind City.

He starts the following quests:

It is implied, turning in Alliance 15 Ui-charactercreate-classes warlock [10] Surena Caledon, that Gakin and Surena were somehow involved romantically.

See List of Stormwind NPCs.