There is no Ansem's Report 0
Riku-Ansem looks like the fake Ansem.
Successfully complete the Prison Guard Challenge in the Mirage Arena
Hm, I would say 1. Let's review the four "Ansems": 1.) There's Ansem the Wise, aka Diz, the "original" Ansem. 2.) His heartless is also called Ansem. Heartless Ansem was the only one who claimed to be the original Ansem, so that's why only he is really an imposter. 3.) Ansem's nobody, Xemnas (Ansem remixed + an x), looks almost exactly the same as heartless Ansem, but this one does not claim to be anyone but what he is. 4.) But if you really want to split hairs, you could count Riku as one of the "Ansems" after his appearance was transformed to look exactly like heartless Ansem. He changes back later on. Convuluted, no? :)
Ansem began researching on the Heartless, after observing their violent natures, during his time on Radiant Gardens. After experimenting with different types heartless, he wrote his report, known as Ansem's Report. In his report, he had stated that the Heartless seemed to act on instinct, and attacked people, attempting to re-obtain the hearts they had lost. During the time he wrote his report, he had attempted to create Heartless of his own, which were known as artificial heartless. By comparing the artificial and pure blooded heartless, he concluded that they were nearly identical. To separate the two groups of Heartless, he printed emblems on his artificial heartless.
No. Xehanort's Heartless (the fake Ansem) looked like Ansem the Wise (the real Ansem) but a lot tanner.
Riku-Ansem is identical to Ansem, which is the Heartless of Xehanort.
It depends on who "Ansem" is, because there are really 3 different "Ansem"':One is the real Ansem the Wise who disguises himself as DiZ because the other 2 Ansem's take his identity.One fake "Ansem" is Xehanort's Heartless, who calls himself Ansem but is really the antagonist of KH1.The third "Ansem" (the second fake Ansem) is Riku-Ansem: after Riku takes off his black blindfold at Memory's Skyscraper in order to gain enough dark power to defeat Roxas, he permanently turns into Riku-Ansem, who is really Riku but now looks like the other fake Ansem and has more combat power.Since all Nobodies are created from the creation of Heartless, Xemnas is the Nobody of Xehanort's Heartless, Ansem.
King Mickey told Ansem about Heartless, so Ansem was too intrigued to not look into them.
SPOILERNo. The first Ansem was Xehanort's Heartless impersonating Ansem. The second Ansem was Riku, who released the darkness in his heart to change himself into a man that looked like Ansem. Riku did so to be able to wield the power of darkness and protect Sora without darkness consuming him.
Ansem the Wise, is the original Ansem, in KH 1 the Ansem they go by is a heartless, with the replica of his understudy, who is the same as Xeanhort from KH 2, Ansem the Wise is the Ansem that made the Ansem reports. Ansem the Wise is the body of Ansem Heartless (KH 1), Xeanhort is the nobody of that heartless, and he is Terra from Birth by Sleep, who was infused heart and soul with Master Xeanhort, the old man from the trailer. Sorry for the spoiler. Terra and Master Xeanhort were fused and that is why he is younger than Master Xeanhort, nd hwy he looks like Terra.
In Kingdom Hearts I, Xehanort, Ansem's apprentice, became a Heartless and impersonated Ansem as an antagonist. In KH2, Ansem actually came in person as Mickey's old friend.
Ansem/Maleficent convinves Riku to give into darkness so that he may obtain dark powers which he thinks he can use to regain Kairi's heart. However, Ansem is really just using Riku as a host. So technically, he doesn't turn into Ansem; the two are still different people.