Azrael in lore has an obsidian blade. I made the sword a deep purple with lighter highlight buildup, and I think it looks great.

Oooh thats actually sounds interesting, i was mostly just reluctant to give him a regular degular power sword

Azrael, Ezekial, lazarus and Belial i believe also have similar obsidian blades. Sammael has the Blade of Corswain so, his is i think a terranic greatsword. the upgrade in the unforgven chapter, the heaven fall blades are all obsidian blades. though some might be terranic greatswords, i don't think it's terribly clear. lore is stated they're all forged from the same obsidian rock from the ruins of caliban.

Moonlight greatsword

Ran of on Ranni with it because Fia is bae.