Description
Dies Irae vs Final Fantasy VII
Both were once former members of an evil organization (Shinra Corporation and Nazis) who were considered their greatest warrior in their world and were greatly respected by their allies for their might, but they would leave these organizations for the pursuit of their own selfish goals (Sephiroth betrayed Shinra after finding out his origins of being made from Jenovah cells and extreme experiments. Reinhard left cause Mercurius taught him about the Eternal Recurrence and convinced him to stop holding back)
both were once presumed dead but in reality were alive and and in their journey they merged with something to that almost made them impossible to be defeated (Sephiroth merging with the Life Stream and Reinhard absorving the souls of all of berlin and the LDO) but despite this they were eventually defeated by a young boy with a big ass blade (Cloud Strife and Ren Fuji) as they were interested/obssed with them.
Also they are smart masterminds who like to fight as their similer goals were to destroy everything due to their own twisted love and messiah/god complexes.
They are also artificial Beings made from out of this world beings (Sephiroth being an experiment using Jenova cells and Reinhard being the Apoptosis of Mercurius)
Also they are sexy and have great hair