Miles "Tails" Prower is one of the main characters in the Sonic.exe: Nightmare Universeseries created by JaizKoys. He appears as one of the main protagonists of Sonic.exe: Nightmare Beginning and a major antagonist in Sally.exe: Eye of Three. He is also a recurring character within Nightmare Shorts and stars in it's third episode.

Tails was a former protagonist that was caught and demonized by Exetior, being upgraded physically with most of his autonomy intact.

He was originally voiced by YuriHaru567 before their departure from the project. They had also voiced Rosy, Cream the Rabbit, Sark's Cream, Inner Tails and Metal Amy.