|Ansem the Wise|
|Television Programs|| Unknown
|Video Games||Kingdom Hearts: Birth By Sleep|
|Voice|| Christopher Lee (original voice in Kingdom Hearts: 358/2 Days and Kingdom Hearts II)
Corey Burton (currently)
|Other names|| DIZ (Darkness In Zero)
|Personality||Kind, good-thinking, curious|
|Allies||Naminé, Sora, Donald Duck, Goofy, King Mickey, Kairi, Riku, Aqua, Roxas|
|Enemies||Master Xehanort, Ansem, Seeker of Darkness, Xemnas, Organisation XIII|
|Likes||Data, learning about hearts, achieving his goals,|
|Dislikes||Nobodies, darkness, Roxas (sometimes), Organisation XIII collecting hearts|
|Quotes|| "I'm glad we've had the opportunity to speak like this, my friend. I'm intrigued by your hypothesis and I'm finding it difficult to stave off the urge to test it."
"I was convinced that they would think and behave the way I have envisioned, but I've could've been more wrong."
"Sad to say, they nearly fell to darkness more than once. But at every turn, that boy arrived with Keyblade in hand to save the day."
"So many are still waiting for their new beginning, their birth by sleep. Even me and even you."
"My apologies. This is only a data-based projection."
Upon his first appearance in Kingdom Hearts Re:Chain of Memories, Ansem is disguised as "Ansem, Seeker of Darkness", and thus shares many personality traits with the Heartless while harbouring his hidden agenda of destroying Xehanort and Organization XIII. Once he reveals himself as DiZ, he becomes much less sinister, and appears to be genuinely interested in helping Riku and Sora.
As himself, Ansem the Wise, true to his name, is a wise sage-king, even though he has been overthrown. It is revealed that his betrayal by Xehanort was what turned him from a selfless man to a lonely, bitter and rather self-serving individual bent on revenge on Xehanort and apparently caring nothing for the fate of the universe. One notable personality trait that he exhibits in Kingdom Hearts II is his clear dislike of Nobodies in general, which is probably due to his rage at his former apprentices and the Nobodies which they have become. His prejudice is so deep that he orders Riku to eliminate Naminé once they are finished with her, despite everything she had done for their noble cause (although Riku refuses). His attitude, however, begins to change when he witnesses Riku's transformation into "Ansem" in order to wake Sora up: he first laughs at Riku and mocks him for using the name "Ansem", but later confides to Mickey Mouse that his heart was aching greatly at the mere sight of Riku and he began to lose his desire for revenge.
By the end of Kingdom Hearts II and Kingdom Hearts: Birth By Sleep, Ansem seems to have reverted to his selfless ways and willingly sacrifices himself to stop Xemnas from succeeding with his artificial Kingdom Hearts. He apologizes to Roxas (although he doubts Roxas can hear him), and expresses to Aqua his remorse for everything he put Sora, Roxas and Riku through while they are in the Dark Margin, openly hoping that Sora will ultimately open the Door to Light and right all of his own wrongdoings during his quest for revenge.