Yami Alexander

Is the main antagonist of capsule monster. Is half the evil that emerged after the spirit of Alexander was divided because of the Millennium Ring.

Biography
Deceiving Yugi, Yami Alexander had them go through the Capsule Monsters trials so as to unlock the power he could not thousands of years before. When the trials were finished, Yami Alexander raced to the room containing the power. Although Yugi and his friends protested, Shadi appeared and revealed that Yami Alexander did have a rightful claim to the power, having completed the trials long ago. However, Shadi allowed Yugi to challenge Yami Alexander for the right to the power.

Yami Alexander then called forth the spirits of his lost vassals to do battle. Though he simply sacrificed their monster to power his Seven-Armed Fiend and Reshef. He saw them as merely tools for his own gain. Eventually, Yugi defeated Yami Alexander using the Armor of Unity, and he was destroyed, and his good half happily passed on.

Powers
He is also one of the few characters in the Yu-Gi-Oh! series shown to be able to merge with his monster, namely Reshef the Dark Being. Other characters with this ability include Yami Marik, Paradox, and Aporia.