These are characters that appear in the Darkstalkers series of fighting games by Capcom.
Foreseeing his death and revival, created a pyramid and a place for his revival. 5000 years later, he was revived when Pyron came along. In order to rule his kingdom once more, he gathered immense power from battling others and then travelled back 5000 years in time. When his kingdom came to be threatened again, he assumed the form of a mummy again to engage in the battles there. He eventually decided to protect his kingdom by moving it entirely into another dimension.
After battling with other Darkstalkers for a brief time, he travels 5000 years back in time to defend his kingdom once more. After fighting off the invaders of his kingdom, he then retaliates and conquers them. But once his kingdom is saved, he hears a voice from the far future. He travels to the present time and enters the Majigen. During the battles within Majigen, he learns that the destruction of his kingdom and people is unavoidable. In response to this revelation, he returns to the past and transports his kingdom beneath the Earth into a new dimension so that it may be free of the wars of Earth.
Anakaris' voice is provided by Kan Tokumaru, who also plays Bishamon, Sasquatch and Victor.
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Official Site: Capcom
Links: Donovan's wiki Astral vision Gamefaqs