Orobas is a powerful Great Prince of Hell, having twenty legions of demons under his control. He supposedly gives true answers of things past, present and to come, divinity, and the creation of the world; he also confers dignities and prelacies, and the favour of friends and foes. Orobas is faithful to the conjurer, does not permit that any spirit tempts him, and never deceives anyone. He is depicted as a demon centaur, He belonged to the order of archangels.
"Orobas appeared to me with a black stallion bucking up with lightning. He appears as a small unusual looking dark haired a or a boy with medium blonde ring curls." -High-Priestess Maxine 
[1 Joy of Satan Website, listed under the names of demons.]