Strings

Strings/The Pantomimer, known as the "Quiet One," is one of Marik Ishtar's Rare Hunters during the Battle City arc. At first, he appeared to be a stationary mime in the park and was a curiosity for many of the people there, but when Marik took control of him, he went to confront Yugi and duel him.

Strings had a huge advantage up his sleeve, the Egyptian God Card Slifer the Sky Dragon. Using a five card combo involving Slifer, Revival Jam, Infinite Cards, Jam Defender, and Card of Safe Return, Strings put Yami in a tight situation. Every time he attacks, Strings can redirect the attack to Revival Jam, which automatically regenerates itself and thanks to Card of Safe Return, he can draw three cards from his deck whenever this happens and because of Infinite Cards, he can hold as many cards as he wants. This made Slifer practically unbeatable.

Yami is just about to give up until Kaiba arrives and encourages him to fight on. The two manage to figure out the weakness to Slifer. Yami uses Brain Control to take control of Revival Jam, forcing Slifer to attack it with its second mouth. Then Revival Jam regenerates, forcing Strings to draw three more cards. Then Slifer attacks again. This continues in a never-ending loop until Strings' Deck is empty, and thus he loses the Duel. Yami gets Slifer the Sky Dragon for his victory.

Strings himself is entirely devoid of personality, and is merely a shell for Marik's will. This worked to Marik's advantage, since God Cards normally do not obey anyone without a Millennium Item, Strings' empty mind allowed Marik to bypass this restriction - Slifer obeyed Marik's will, though Marik didn't have to be there in person. However, Strings' lack of mental awareness also served another end - he had no conscience and could feel no pain, so would hold nothing back.