The Lost Dwarves

The Lost Dwarves encounter, comprising Olaf, Eric "The Swift" and Baelog, is a Horde-only boss encounter in Uldaman.

Adventure Guide
''Seeking fame and, more importantly, fortune, the three brothers Eric, Olaf, and Baelog took on a contract from the Explorers' League to delve deep into the halls of Uldaman and clear a path for a group of researchers. For these three dwarves, however, "clearing a path" unfortunately entailed "getting hopelessly lost in an ancient labyrinth." Proud dwarves to the end they fight to prevent the secrets of Uldaman and the Explorers' League from falling into the hands of the Horde.''

Baelog
Baelog favors combat, attacking with his sword and bow.

Eric "The Swift"
Eric favors speed, charging head-first into battle.

Olaf
Olaf favors defense, blocking with his shield.

Trivia

 * Baelog, Eric "The Swift" and Olaf are a reference to The Lost Vikings.