Lahirridiel

Lahirridiel is a demon of shadow who terrorized humanity in the early 800's. Eventually, he was driven back to a shadow-filled domain he created and was sealed inside.

During the Black London storyline, Lahirridiel gave Shadowbender the idea, unbeknownst to him, to merge his realm with the normal world. The idea was that in doing so, Lahirridiel's power over the physical world would be absolute.

The Guardians of O.R.D.E.R. managed to foil his plans and trap his soul inside a gem provided to them by Flarewolf. The location of the gem is currently not known.