Simplify the following text for a Grade 6 native English-speaking person.
Original: Another character is named the Nameless Pharaoh or Dark Yugi ( also known as Dark Yugi , `` the other Yugi '' and eventually `` Atem '' ; the latter is his real name , revealed only near the end of the series ) , a darker personality held in the Millennium Puzzle .
Simplified: This soul is Dark Yugi ( Yami Yugi ) , an Egyptian Pharaoh .