User blog comment:B214/DxD Zero: Sirzechs story/@comment-2601:8C:601:5692:6089:5245:14CC:C305-20180928184102/@comment-2601:8C:601:5692:BD25:B0B5:DE15:A1A4-20181013045724

Scarmiglione is the name of one of the twelve Malebranche (Claws of Evil), which have recently been revealed to be living Devil-'type "Artifacts" that possess autonomous wills and are capable of transforming into wieldable "Devil Weapons" (an alternate name for them) [I so want to change this to "Devil Arms" for a DMC reference, but that depends on original Japanese] that were sealed away by the original Four Great Satans out of fear for their power, who ordained that they only ever be used as a last resort and that their leader, Malacoda''', alone should never be unsealed. The spoilers are a little confused, but seem to suggest that they were created by the Satans out of Agreas crystals in response to (and imitation of) God's "Artifacts" (presumably, this should be Sacred Gears), though they later deemed them too dangerous.