Board Thread:General Discussion/@comment-28164618-20160419132550/@comment-38067602-20190106023721

Saber: Baldr. Guy was invincible to everything but mystletoe, which I doubt anyone would attack him with. Also, it's implied he becomes Yaweh, aka God, so yeah.

Lancer: Wukong. He doesn't seem like a great candidate at first, but I'm sure anyone who knows of the Monkey King's exploits, knows he is completely overpowered, to say the least.

Archer: Alcides. Just Alcides.

Rider: This one's a little tricky, since the most powerful rider is obviously Quetzalcoatl. Quetzalcoatl created life as we know it in their mythology, and is just insanely powerful, but they're a divine spirit, and we don't know if Grand Spirits can be divine spirits. But we do know that humans can be Grand Spirits, and Quetzalcoatl at some point had a human vessel worthy of being a Grand Spirit. The aztecs have artworks of a human Quetzalcoatl, and this human form could very well be a Grand Spirit.

Assassin: Hassan I Sabbah, this one was already confirmed, since he resigned his role, possibly Cain, as he was the first person to kill someone else.

Caster: Solomon, and then Merlin after him.

Berserker: Atlas, the guy who literally held up the sky. Nuff said.