The Black Bull resembles a cross between a giant maggot and a dragon, having a large black and gray blubbery body with black and red wings protruding out of it. Spikes are present around the Black Bull's body and wings. Its face is red surrounding its singular green eye and has white fangs. It also has hands with pointy white claws next to its mouth.
Black Bull uses two main attacks; either it shoots fireballs towards Shadow or breathes fire at the ground, having it spread out in a ring of flames to try and hit Shadow with. In both cases, Shadow has to damage its only weak point - its eye. The player can use the Homing Attack or weapons to damage it. In the Lethal Highway battle, the player can use Black Wings to damage Black Bull's eye with Homing Attacks or they can defeat the Black Warriors and use their weapons to damage Black Bull. In the Death Ruins battle, the player must use a Spring in front of the starting point to reach a rail and grind on it. Then he/she can use either Homing Attack or weapons collected from Black Warriors to damage Black Bull's eye. In both battle sections, using Shadow's Chaos Control via Hero Shadow would slow down the Black Bull and the clock for an easy A-rank.
As it is the case with all bosses in Shadow the Hedgehog, the Rank the player received for defeating the Black Bull is based on the time they taken to defeat it. Due to both fights taking place at different times in the scenario, the ranking times in each encounter differ between each other:
This boss, along with the Egg Breaker, are the only bosses in Shadow the Hedgehog that can be fought twice in a single playthrough of the main storyline.
In the case of the Black Bull, the player must complete the Hero mission of the following stages that lead to Death Ruins: Westopolis, Lethal Highway (which the Black Bull is first fought at) and Circus Park.
In the Pinch mode of the "Death Ruins" boss fight, Black Bull uses his jaws to try and bite Shadow.
In the Lethal Highway Level, if the player successfully damages the Black Bull after the "half health cutscene" when he is not in a corner, he will try to change direction and go through the building, thus causing the screen to shake momentarily.
This boss and the Blue Falcon are bosses named after vehicles in the F-Zero series.