|This villain was proposed but was rejected by the community for not being heinous enough or lacks what is necessary to be a Pure Evil villain. Therefore, this villain shall be added to our "Never Again List", where proposed villains rejected by the community shall be placed to prevent future proposals of the same evil-doer. They can be proposed again (with the permission of an administrator) if new elements appear in their series that can change their status as non-PE villains.|
Any act of adding this villain to the Pure Evil category without a proposal or creating a proposal for this villain without the permission of an administrator will result in a ban.
Dark Mephisto (Zwei) (ダークメフィスト（ツヴァイ） Dāku Mefisuto (Tsuvai)) is an evil Ultraman created by Unknown Hand after the fall of the first Dark Mephisto. He was created with the same appearance as the first Mephisto but with even more power. Unknown Hand corrupts TLT Memory Police officer Hiroyuki Misawa as his pawn.
Dark Mephisto (Zwei) was created by Unknown Hand by possessing a memory police named Hiroyuki Misawa when Mizorogi was running away from Fortess Freedom in the TLT facility. When Hiroyuki Misawa was corrupted by Unknown Hand, his personality changed drastically.
Misawa later appears when he shoots Mizorogi from behind and after he shoots Mizorogi he tells Nagi, Komon, and Mizuo that he will paint the world into darkness, Misawa eventually turns into Dark Mephisto (Zwei). After he transformed, he seemed to have the same appearance as the first Mephisto, he was in his giant form trying to kill the three of them.
Luckily, Ultraman Nexus came to defeat the black giant, Zwei finally turned his eyes red and challenged Nexus. But when Zwei takes out his Mephisto Claw, Nexus is easily overpowered by him, because Zwei is hard to beat, Nexus turns into Junis Blue and flies into the sky. Mephisto followed Nexus flying and eventually Nexus was still overpowered.
Zwei ends up absorbing Nexus' energy because he knows that the life of Nexus human host is very short. Mizorogi turned into Dark Mephisto of his own will and Mizorogi was ready to take on Zwei. When they were fighting, Mizorogi overpowered Zwei at first but in the end Zwei was able to overpowered Mizorogi and stabbed his stomach. Zwei laughs seeing Mizorogi suffer and torment, Mizorogi tells Nexus that saving people is his duty because light has come to him. Nexus uses Over-ray Schtrom to kill Zwei and the attack is successful and Zwei turns into blue particles.
After Zwei died, the dying Mizorogi told Nagi that he and Misawa were puppets manipulated by the Unknown Hand. At the end of the scene, an unknown person has deleted the data of the person who has the potential to become a Deunamist.
- Even though Zwei's strength was above Mephisto's, he still lost his initial battle with Mizorogi. If Mizorogi wasn't shot by Misawa, maybe Mizorogi would beat Zwei.
- Dark Mephisto Zwei and Dark Zagi are evil Ultramen whose eyes are red. Matches, they are evil Ultraman who never help the protagonist and both of them are lack of redeeming qualities.