Demon - Mephisto - (悪魔－メフィスト－ Akuma -Mefisuto-) is the 14th episode of Ultraman Nexus.
- Ultraman Nexus Volume 4 features episodes 13-16.
- This episode, along with "Hero," was later featured in New Ultraman Retsuden episode 85 "Showdown of Destiny! Nexus vs. Dark Mephisto."
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