Taros

Taurus are bull-like soldiers with horned heads found in the Dark World in A Link to the Past. They have large white eyes and appear in blue or red varieties, each with a different weapon. Blue Taurus weild spears (which appear to have blunted tips), while Red Taurus carry tridents, and are usually much more aggressive. The blue ones are the most common and are found spread all over the Dark World. Red ones are usually only found inside Ganon's Tower, although one appears just north of the Village of Outcasts. The red variety can also take and deal more damage. The behavior of a Taurus is almost identical to that of a Soldier in the Light World, and alongside Moblins they appear to be the mainstays of Ganon's army. Despite this compared to many Dark World enemies they are quite weak, able to take and deal less damage than most, but they are much more intelligent and persistent than many of them.

A Link to the Past comic
In A Link to the Past comic, a Taurus is first briefly seen when Link enters the Palace of Darkness. Another Taurus later appears while Link is in the Swamp Palace, where it attacks him from behind along with a Hinox. The foes then shut the entrance to the rest of the palace and impede Link from rescuing the Maiden inside. As Sahasrahla's friend watches the battle between Link and the Taurus from a fountain in the Light World, the boy accidentally activates the statues that cause water to pour into the  fountain. This leads to the Swamp Palace in the Dark World to get  flooded, washing away both the Taurus and the Hinox, who eventually end  up sinking as they struggle with each other.

Trivia

 * Using the Magic Mirror to warp to the Light World from an area that contains Blue Taurus to an area that contains Green Sword Soldiers (such as south of the Haunted Grove) will cause the soldiers to turn purple in color.