Saijou Kirari

A 15 year old Idol Singer with a strong resemblance to Hishou's girlfriend Ruri. She seems to have the power to see demons and Reideens and can hurt the demons with her song.

Amagai Reiko

The 28 year old Talent Agent who Ace once saved. She became an avid supporter of Reideens and is trying to make stars out of the Angels.

Miasaka Ruri

The 15 year old girlfriend of Hishou. She fell off a building and has so far spent the series in a coma. Indications are that she'll become integral to the series, and yes, she wakes up.

Washizaki Tsubasa

The 6 year old sister of Hishou. She's very supportive of her brother becoming an idol, and knows about him being a Reideen.

Bad Guys

Lúci De Mon

He is the Ultra-Evil who has come to earth to get God Reideen for his own nefarious purposes. He took the body of a business man, and is using the man's offices as a base in which to work from on Earth. His demons are never enough to defeat the Reideens, however they get the gems that he needs to find God Reideen.

Echidna

One of Lúci's demons that has broken away from him. She falls in love with Ginga and is willing to sacrifice anything for him.