Final answer:
However, Alexander was able to tame and ride him, forming a strong bond with the horse. Bucephalus became Alexander's companion and carried him into many battles.
Step-by-step explanation:
The legend that involves Alexander and a black stallion is the story of Bucephalus, Alexander the Great's trusted horse. Bucephalus was a black stallion with a white star on his forehead. According to the legend, Bucephalus was a wild and untamed horse that no one could control. However, Alexander was able to tame and ride him, forming a strong bond with the horse. Bucephalus became Alexander's companion and carried him into many battles.