Both of them are from the new series spinoff series of Ever Last'n Night call: "Retrorim Unleashed: Globalist Phaseria"
As the evil in the world of the time was defeated. A new enemy appeared into the shadows of Earth.
It was the year 20088 A.D. The Earth was slowly recovering from the battled wounds of the Eons, Pasts, Presents and futures and Beyonds but the Final continuum was about to be back into a Globalist Time phase due to reality and fiction collided with the time paradoxes and the Mirror codexes and codes which was occurred in the "Ever Last'n Night series" which was left-ed over.
And now new people of the from the children of Ovolless and Kystrital survived but all of gone their separate ways due to common powers between one another. They 30 of them couldn't decide what do so they all went. But Zant and Dieceical were remains of what the family has left. No one knows what happen to the rest of the 28 of them.
Also because Ovolless is a non-extisting-extisting being but he since he died in the Ever Last'n Night series and along with his wife. The Last name Blood Edge remained in Zant's heart, also his sister as well.
The back ground were they are at is their home.
Both of them are back on Earth to rebuild and help others from the chaos that ended in the 20015 A.D. but started in 1999 A.D. back on Earth due to the hyper technology and the testing the "Project Extend series" and the Recoder Wars, more events against Droind Axon and his allies.
The Cause of the effects of the two series, the Earth and the solar system is yet to be in repair from all the wars, dues that has played a toll to the future of Mankind.

In some time when Zant gets mad he gets a bit from his father cause his hair becomes what he his dad had on before. And so as Dieceial but is little different. I will explain later those.

Also the two characters and names are based off my own works from 2007