Character at the end of ACoS

[Artificial Entity]

Hello, something has been bothering a friend of mine lately. It's a character at the end of ACoS, who helped Rand kill Sammael in Shadar Logoth. I speculated that this might be Moridin, since he seems to want Rand to survive until Tarmon Gaidon, but I'm not certain. Do you have any idea who it might be?

[Majsju]

It is Moridin, confirmed several times in the later books.

[mb]

A number of threads discussed this.

 

The mindtrap chapter seems to also confirm.