Doll

人形

A mime and one of Marik Ishtar's Ghouls. Doll went mad after killing his parents, and sealed his own conscience away out of guilt. Eventually, he came into Marik's mind control, and due to his crushed mind, became very easy for Marik to bend to his will. Marik programmed Doll to kill Yuugi at all cost should he win the Duel against him. Doll has a huge advantage up his sleeve, the Egyptian God Card "Saint Dragon - The God of Osiris". Using five card combo involving "Osiris", "Revival Slime", "Infinite Hand", "Defend Slime", and "Treasure Cards of Safe Return", he draws three cards from hsi Deck whenever this happens and because of "Infinite Hands", he can hold as many cards as he wants. With Osiris' attack and defense proportional to the number of cards its controller holds, and with "Revival Slime" able to absorb and reform from any attack Dark Yuugi is able to make with the aid of "Defend Slime", with "Buster Blader", and then uses "Brainwashing - Brain Control" to take control of "Revival Slime" as it regenerates so it under his control, forcing "Osiris" to attack it with its second mouth (which is actually "Osiris'" effect of depleting 2000 points from a monster that's been summoned). Then 'Revival Slime" is destroyed and regenerates, forcing Doll to draw three more cards due to "Treasure Card of Safe Return". Then "Osiris" must attack "Revival Slime" again, since it reformed under the Pharaoh's control, destroying it and allowing it to regenerate again, and forcing Doll to continue drawing due to "Treasure Card of Safe Return". This continues in an infinite loop until Doll's Deck is empty, and thus he loses the Duel through a Deck Out. Yuugi gets "Saint Dragon - The God of Osiris" for his victory.
Doll himself is entirely devoid of personality, and is merely a shell for Marik's will. This worked to Marik's advantage: since the Egyptian Gods normalyy do not obey one without Millennum Item, Dolll's emptymidn allowed Marik to bypass this restriction: "Osiris" obeyed Marik's will, though Marik didn't have to be there in person. However, Doll's lack of mental awareness also served another end: he had no conscience and could fell no pain, so would hold nothing back. After Doll's loss to Yuugi, Marik decided to talk through Doll one last time then released control of him and he collapsed.
In the Duel Monsters anime, Doll makes one additonal appearance during Dark Marik's Duel with Mai Kujaku at the Battle City Finals. After Marik's "Executioner - Makyura" was destroyed during their Shadow Game, Marik's memory of Doll was erased, though Marik declared that no one in his mind was worth remembering anyway.