Kage

Kage is one of the two known living children of Yami, and from a flashback from Yoru, the other living son, isn't just considered Yami's favorite son, but is also responsible for the other children.

First Death
During the events of Black Sun and Shining Sun, Yoru joined the good side, and together with Skyla and the rest, destroyed Kage. However, Kage didn't die yet...

With An Iron Fist
It turns out that a rogue shadow from Kage's body, which became the Shadow Tech Beast, created after the rogue shadow taunted several Eeveelution characters, survived as the sole part of Kage left, from which regenerated Kage's shadow body. He returned to Dragonic Heaven by shooting himself like a meteorite there, compressing his body into an extremely dense form on the way. Upon collision, Kage has become clad in a metal so dense that nothing can affect it, nor scratch it. The only way to defeat Kage now is by getting him into the sun itself. However, he now has weaponry aside from his near-indestructibility, now with shadow arrows with a copper bow and arrow case, and a shadow sword with it's own copper sword pouch. At midnight during the full moon, one can see him on a rocky cliff with what appears to be a cape of raw shadows.

Second Death
Not surprisingly, Kage was killed again after attempting to kill Yoki, Yuki and Skyla, but rebirthed from a personal shadow minion belonging to Shadow, which was quickly replaced. Now, Kage appears as a sleek humanoid remniscent of Slenderman with shadows streaming out from behind. In this new one, one can see hundreds of creepy, yellow faces, emitting evil whispers that torment anyone near.

Also, it is to note that all should avoid any sexual contact with Kage, as it hurts like the fires of hell. As such, Kage plans to r*pe Skyla Angelwing after one of her parties, in which she usually gets drunk on sake, as part of a sinister plan to end the Angelwing bloodline, to follow Yami's legacy.