Fallen Angel

Fallen Angel series is a set of special monsters, consisted at least two types at once. All of the monsters possess Fairy-Type and Fiend-Type, sometime with a third extra type. They are made up with various of Attributes and various effects. There are two sub category for this sets of monster. First is "Princes of Hell", this group consists the seven strongest Fallen Angel cards which are based on the "Princes of Hell" with the Seven Sins. They share the same first effect, which is invulnerable in certain circumstances, though the requirements are different for each card. The second effect is unique for each card, and the effect is greatly inspire by their sins which they possess. In English Version, they are named by their original name, while in Japanese Version, they are given the title "Fallen Angel".

The second sub category is normal Fallen Angel, which is a group consists of large amount of Fallen Angel, ranked from weakest to strongest. They play the role of a servant or an assistant for the Princes of Hell, more accurately as a support card, though there are some exception where a few strong card which possess almost the same ability as the Princes of Hell. Unlike the "Princes of Hell", in both TCG and OCG, they are given the title "Fallen Angel".

History
"Fallen Angel" is originally the Angel who resided on the mighty Heaven. However, they were slowly consumed and engulfed by the darkness due to their sins. They were grouped and led by the Seven Princes of Heaven, who were the splendid Archangel during that time, to conquer the throne of Heaven from the mighty god. However, they failed the mission and they were banished from the Heaven permanently. Their soul were sent to the bottomless Hell to receive the judgement from the God of Hell. They tried to retaliate but their attempts vanished into thin air as their rival, The Seven Archangels prevent them to do so. All of the rebellious angels and the Seven Princes of Heaven were sealed inside their respective jars and burned in the Hellfire for eternity. After a thousand years passed, when they were going to vanish, they sold their own soul for a reincarnations and their attempts succeeded. However, they were forced to reside in cards due to their weak body which require a considerable time for regeneration.