Wiseman

Wiseman, also known as the Doom Phantom, is the true antagonist of Sailor Moon R. At first, he appears as the advisor of Rubeus during his attempts to take over Crystal Tokyo, and also advisor to Prince Diamond, but is soon revealed to be manipulating them so he can destroy the world with dark energy. He gave Emerald a crown to transform her into a dragon, resulting in her being destroyed by Sailor Moon. Wiseman then tricked Rini into believing that no one loved her, and he transformed her into Wicked Lady.

Sapphire suspected Wiseman, and soon overheard his plan to kill him and Diamond, and that he was working for an entity called the Doom Phantom. Sapphire attempted to warn his brother, but Wiseman killed Sapphire with an energy wave. Diamond planned to execute him after taking over Tokyo, but did not initially believe Sapphire until Sailor Moon made him realize the truth. Diamond fought Wiseman, and eventually sacrificed himself to save Sailor Moon from an attack by Wiseman, but was able to injure him so that his arms were destroyed, but he came back together.

Wiseman attempted to use the dark crystal and Wicked Lady to open the Dark Gate and send dark energy through Earth to destroy it and Wicked Lady, but Sailor Moon and Darien got through to her and she became Rini again. Wiseman revealed himself to be the Doom Phantom and attacked Sailor Moon, who transformed into Princess Serena, or Neo Queen Serenity, and entered a beam struggle with Wiseman. Rini used the silver crystal of the future to transform into Princess Rini, and together Serena and Rini unleashed an energy explosion that completely destroyed Wiseman.

Wiseman attacks by using a crystal ball to shoot energy waves, dark energy waves, or dark energy spears. He has the appearance of a hooded figure. His face is rarely seen, and looks like a skull.