Mirador

Mirador is the steed of Tirion Fordring. He stands outside the little cottage where Tirion lived in exile along the Thondroril River in the Eastern Plaguelands, and later bears him into battle during.

Wrath of the Lich King
Mirador remains with Tirion as he leads the Argent Crusade in Northrend. He can be found at the Argent Vanguard or Crusaders' Pinnacle in Icecrown.

Trivia
"Mirador" means "spectator" or "viewpoint" in Spanish; slightly fitting, as Mirador has been a witness to some of Tirion's battles.