Vexen/Even

Vexen (voiced by Derek Stephen Prince) is Rank IV within Organization XIII. He controls ice and uses it to command storms and blizzards while defending himself with his massive shield. He is the Nobody of Even, a former apprentice of Ansem the Wise. Vexen appears in Kingdom Hearts: Chain of Memories. He also appears in Kingdom Hearts 358/2 Days as a playable character in Mission Mode.

In Kingdom Hearts: Chain of Memories, Vexen assists Lexaeus and Zexion in their efforts to stop Marluxia and Larxene from overthrowing the Organization by creating the Riku Replica and uses it to carry out several experiments on Riku and Sora. Vexen then confronts Sora and forces Sora to enter a memory of Twilight Town. After battling and losing, and seeing that Sora is too dangerous, Vexen plans to tell him of Marluxia's plot and Roxas, but he is incinerated by Axel before he can reveal this.

Vexen returns in Kingdom Hearts III as a member of Xehanort's True Organization XIII but this time with his eyes glowing yellow to represent a Seeker of Darkness. Demyx was a member of the Organization, until he was benched by the replicas.

Even is a former apprentice of Ansem the Wise and the original persona of Vexen.

In Kingdom Hearts Birth By Sleep, a decade prior to Kingdom Hearts, Even was a scientist for Ansem the Wise and Ienzo's caretaker. He first approaches Dilan and Aeleus when the two guards wanted to save Ventus from an Unversed, but Even assures them that Ventus could handle it. After Ienzo wandered off, Even found him walking towards Ventus, reminding Ienzo not to leave because it is dangerous. However, Even thanks Ventus for finding Ienzo. Over time, Ansem would grow worried of the Darkness in people's hearts and so, he created a laboratory in his castle's basement for such experimentation, which caused the apprentices to turn into Heartless and Nobodies, Even becoming Vexen. The six Nobodies formed Organization XIII and banished Ansem the Wise to the Realm of Darkness.

Even is resurrected following the destruction of his Heartless and Vexen, and awakens with the other apprentices in Hollow Bastion. However, he is not fully recovered, so he rests with Dilan.