Devilub

Devilub appeared in 1986 TV series called Choushinsei Flashman. Devilub is a green, dragon-like Beast Warrior that has strange powers regarding the undead. It can absorb in souls of the deceased still on the Earth, primarily children, where it can transform them into smaller flying servants of itself. These beings, which the Devilub controls, bite other people trapping them within horrible nightmares. The Flashman come to learn of the deeds of this Beast Warrior by way of Sumire, who is trying to escape from the creature due to being dead herself, unknowing to Dai who had previously believed her to be a living girl who may have been his sister. After the Devilub finally captures Sumire, it tries to use her to attack the team but they resist; when the Devilub tries to absorb and eliminate the ghost girl, Dai is able to go in and rescue her due to a unique connection, not being her sibling but instead by sharing a power connected to a prism of the Green Star of the Flash System, which she had found and kept prior to death giving her strange abilities in the afterlife. After being rescued, the Flashman destroy the Devilub with the Rolling Vulcan, then with Flash King.