The Warlords of Draenor is based on the time theme. The heroes of
Azeroth can travel through time and arise to dominate. The heroes of time
include: Kargath, Kilrogg, Gul'dan, Blackhand, Ner'zhul, Grommash, Durotan,
Velen, Khadgar, and Marrad. (Warlord
Of Draenor Source)
Kargath Bladefist battled for survival under the ogres'
gladiatorial arena on Draenor. Kargath is part of the shattered Hand Clan.
Kilrogg Deadeye is the warlord of the Bleeding Hollow Clan.
Kilrogg and his clan lives in the dark areas of the Tanaan Jungle with ancient
trees and secretive paths.
Gul'dan is in the Stormreaver Clan. Gul'dan resides in the
Shadowmoon Valley. This warlord is obsessed with pocessing power and also joined
with the Burning Legion to obtain power.