Well, not an angel so much as a Tomogara, or Crimson Lord, as they are called in the dub. Yeah, I really like the anime Shakugan no Shana. This is a fan-made Tomogara by me, called The Angel of Black Fire, despite there being nothing angelic about him. His unrestricted spell allows him to use his fire as a long-range consuming tool, managing to stretch across the whole of his Fuzetsu. He is a Wanderer that works for Bal Masque, but prefers to do so without any Jaegers to get in his way. He is recognizable for his dark, purplish flame.

The Angel belongs to me.
The Tomogara/Crimson Lord belong to their creator.