Linzi Redgrin

Linzi Redgrin is a gnome rogue who wanders around Dalaran and acts like a player (using Hearthstone, training professions, checking the bank, etc.).

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