Before his turn to evil, Master Vile was once known as Eldin, a researcher, the husband of Lady Fienna of Iutus, and father-to-be of Rita. Alongside his wife, devoted their lives to studying the Morphin Grid, together they tapped into the Grid itself, allowing them to see the potential future of their unborn child. Unlike his wife who saw purity and good in the form of the Mystic Mother. Eldin saw darkness and evil in her future, hearing the voice of the ancient being Dark Specter, who poisoned his mind.
Eldin became obsessed with bringing Dark Spectre into his dimension and providing him with a vessel, choosing his own daughter Rita to be that vessel. Thanks to his desire to aid Dark Specter, the ancient evil granted him power, transforming him into Master Vile.
Originally created for the Japanese show Ninja Sentai Kakuranger as the main antagonist of the show. The original version of the character was called Daimaou and was a Yokai. Unlike his U.S. counterpart, Daimaou had no biological connection to either Rita Repulsa or Rito Revolto.
In Ninja Sentai Kakuranger he was voiced by Hidekatsu Shibata and played by Hideaki Kusaka.
The Search for Rita Repulsa
After discovering that his now ex-wife had given birth, he chased the two across the universe for years, until he eventually tracked them down to the planet Da'quar where they made their final stand against a horde of Tenga Warriors before being saved by the Phantom Ranger. Personally tracking them down to a Masterforge not long after their escape from the planet, engaged in combat against both Fienna and an injured Phantom Ranger, quickly defeated the two and captured his daughter.
With his daughter in his custody, his plan to transform his daughter into a vessel for Dark Specter was foiled by Fienna and the Phantom Ranger after they overloaded Rita with Grid Energy, making her incompatible as a vessel. With his plan unsuccessful, he took his daughter under his wing and guided her to become the evil witch Rita Repulsa.
10,000 Years Later
Over 10,000 years later, Vile arrived on Earth's Moon which was under the combined control of Rita Repulsa and Lord Zedd, in search of the Zeo Crystal which was rumored to be on Earth. Discovering that his daughter married Lord Zedd without his consent, he developed a dislike for Zedd.
Unlike his children, Vile has been close to success on numerous occasions and only seeing his losses as minor failures against a mild inconvenience. Not long after his latest defeat, Vile summoned the Orb of Doom to Earth, a powerful magical object that can reverse time. Sending Rito to Angel Grove to use the Orb, he reversed the Power Rangers ages and transformed them into children, stripping them of their powers. However, the Aquitar Rangers intervened and protected Earth from Master Vile until they were returned to their rightful ages.
After the Machine Empire invaded Rita and Zedd's moon base, Vile begrudgingly allowed the two to hide away in his own home until the Machine Empire left. However, they never returned to the moon base after the destruction of the Machine Empire.
It is unknown exactly what happened to Master Vile after the death of Zordon and the Zordon Wave spreading throughout the universe but is assumed he perished when he came into contact with it.