Hail

Reo (also called Hell, or Hyou in japanese) is a recurring villain of Jibaku-Kun (as known Bucky: The Incredible Kid or Bucky: Searching for World 0) series, a creation of Ami Shibata.

History
Reo was the only Great Child who agreed to be a Great Soldier and officially live in Needle Tower, so he lives alone in eternity Pointed Tower, where commands with hand-rail all 12 Worlds and playing their curses on all those who contradict.

It is he who creates the curses of the Needle Tower (as Silva, Funen, Live and Dead, among many others) for purely personal annoyance in some cases reaching bring death.

A G.S. extremely powerful and skillful, and is a rival to both Spaak (both have a similar fighting style with twin swords). It is somewhat effeminate, is fascinated and passionate about Bucky, on the other hand, feel the same hatred. In the last episode it is revealed that Reo was the GC Doidicus before the father Bucky and therefore has been bearer of the Spirit King Jibak. Despite all that Reo is not all bad, it just was influenced by the powers he received. Like the Dead of Novas, Reo has visual gothic, complete with a red cross Anchored in each hand, symbolizing his terrible power.

During part of the story he manipulates the other Great Children to exterminate Bucky and his friends accusing them of "Troublemakers Children" which ultimately make them often do battle with each other. Reo was owned by Slash, and was until the "End of Dreams" (Place to go where the GC That lost dreams) and fought Bucky and Sizma.

Powers
It's a skill Pointed Tower designed by Reo which is able to send curses on person, or even a world. She was responsible for killing most of the family of Pinky, turn the Master Funen in a fragile creature, and merge the Hexas and Novas worlds doing both switch sides after dark.
 * Curses