Shikoutei

Shikoutei (始皇帝, possibly AKA Qin Shi Huang), is a shaman who appears in the Shaman King: Legacy of Spirits video game series.

Abilities and Powers
With the machine's power, he is extremely powerful. It is implied he can take down Asakura Hao, but given their meeting was during Hao's first incarnation 1000 years ago, it is questionable if Shikoutei can defeat Hao in his current life. Drawing energy from Tao Ren, Horohoro, and Ryu increases his strength, though he is still unable to defeat Yoh.

History
In the past it was stated that 1,000 years ago, he met a shaman very similar to Yoh. He built and underground tomb to hide himself from him and the Great Spirit. During this time he created a machine that enabled him to drain furyoku from other shamans to increase his power.

Shikoutei is the main antagonist of the second part of Shaman King: Legacy of Spirits. He causes a rift in time, causing even the Great Spirit to disappear. He forms many apparitions of famous Chinese mythological/historical figures (ranging from Sanzang/Sanzō of Journey to the West and Zhuge Liang Kongming/Shokatsuryō Kōmei from The Three Kingdoms) as well as many of Yoh's friends to misguide Yoh but at the same time (in terms of the latter) try to discover the culprit behind the mess.

The apparitions are later discovered to be Over Soul/Spirit Control crystals manipulated by Shikoutei, and thus are bound to his control despite having some form of free will.

He reveals to Yoh his name and motives as he posseses Kongming/Kōmei. After a fight, Kongming/Kōmei breaks free from his control and soon tells of what has happened to Yoh's friends and where they are being captured. Kongming/Kōmei, along with fellow Shu Kingdom comrades Liu Bei/Ryūbi, Guan Yu/Kan'u and Zhang Fei/Chōhi who were all manipulated and created by Shikoutei, disappear after giving final words to Yoh.

He is weakened when Yoh finds the machine and frees the people trapped in it. Afterward, Yoh defeats him in combat and Shikoutei dies realizing his foolishness.

Much like the mentioned famous mythological figures of Shaman King (such as Jesus and Buddha), Shikoutei's origin is that of the first emperor of unified China, and is known in Chinese as "Qin Shi Huang" (pronounced "Chin She Hu-wang") and as said from his own mouth while possessing Kongming/Kōmei, he was originally from the Kōga/Huang He (黄河, lit. Yellow River) Civilization.

Trivia

 * Shikoutei is the strongest enemy in the game, but only if Yoh does not free the shamans he has imprisoned to lower his power to a more reasonable level. Otherwise, he would be impossible to defeat as his high amount of HP and fairly damaging attacks will grind through much of the player's party.