Malefic

Source: wikia
Malefic, known as Sin in the OCG, they are usually corrupted versions of existing monsters. Paradox, who plays the "Malefic" Deck, claims that these cards are to be the most powerful cards in history, due to the fact that they aren't bound to Normal Summoning rules.
These monsters allow for a large amount of cheap power to be Summoned rapidly from the hand, deck or graveyard except Malefic Stardust Dragon which has to be summon from your hand , as their only Summoning requirements are banishing their original version from the Deck (or Extra Deck).

Most of the monsters in this archetype are corrupted monsters, so all of them are DARK Attribute. They all have mechanical-looking pieces of their body which are made of a mix of white, grey and black metal, including wings and face-plates (and, in the case of "Malefic Stardust Dragon", knee and torso plates).
Their faces have masks similar to that of Paradox, with the right side black, the left side white and line patterns that cover the eyes ("Malefic Cyber End Dragon" also has its far right head black and far left white. "Malefic Blue-Eyes White Dragon" and "Malefic Red-Eyes Black Dragon" are the only "Malefic" monsters whose right eye is not covered by their masks.). Also, each one is the counterpart of a Dragon-Type monster (with the exception of "Cyber End Dragon", which is a Machine-Type monster). The remaining three monsters look very similar, but have no known non-Malefic counterparts.

Nearly all "Malefic" monsters are Special Summoned by banishing their original form from the Deck or Extra Deck. They share three aspects with the "Earthbound Immortal" archetype: Both archetypes consist of DARK Attribute monsters, only one of them can be on the field at a time (in the movie, more than one can be present) and destroy themselves if a Field Spell is not present. They also have an effect in common with the "Meklord Emperors" which prevents other monsters you control from attacking (in the movie, they don't have this effect either).