There are no spoilers for Warlords of Draenor here, because we're not talking about that Blackhand. No, the Blackhand we're going to talk about today is the original, the first Warchief of the Horde, the leader of the Blackrock orcs. A raider of the Sythegore Arm and a feared wolf-rider, Blackhand was both tactically brilliant and overly fond of flattery - he rose to the position of Warchief because he possessed both the ruthless cunning necessary to lead the Horde and the ego and vanity that Gul'dan used to manipulate him. It was this strange mix in his personality, his bloodlust and desire for power yet gullibility and willingness to be misled that led him to the position of Warchief, led him onto an alien world, and ultimately led him to his death.
Blackhand was first in command of the Blackrock clan. He had three children with his mate Urukal, Griselda, Rend and Maim. Griselda's fate shows us that not all orc clans were as egalitarian as the Frostwolves. But before all of that, before he sold his children to warlock magic to make adults from them before their time, before he was Warchief, before he drank the demon blood after Grom Hellscream, Blackhand was an ambitious, cruel, and eager warrior who sought glory in battle, and his own aggrandizement.