Tipsi Wobblerune

Tipsi Wobblerune is a gnome mage who appears outside the Legerdemain Lounge and A Hero's Welcome in the Broken Isles version of Dalaran during the Kirin Tor Tavern Crawl. To start the Tavern Crawl, Alliance players have to talk to her in Dalaran. Her image subsequently appears in each tavern that the player visits in order to teleport them to the next tavern.

Her Horde counterpart is Anebria Sunwine.

Quotes
Hello,. Did you know there's a tavern crawl going on today, sponsored by the Kirin Tor? In fact, I can teleport you to the tavern where everyone is hanging out.
 * Dalaran

Welcome to the Kirin Tor Tavern Crawl,. Help yourself to all the drinks and free food you can handle. We'll be leaving for the next tavern in a couple minutes.
 * Participating

say
 * Switching taverns

In Hearthstone
Tipsi appears as HS Tipsi Wobblerune (one of the bosses) that can be encountered in the HS Dalaran Heist single-player experience in the Rise of Shadows expansion for Hearthstone.