As for Veera, the necromancer in the team, she was a member of a necromancy cult known in the universe as the Odyssey.
She didn't recall her rank, whether she was high-ranking or just a normal member, but she knew the Odyssey was a group she had wanted to join from the day she became a necromancer.
She also recalled entering a fragment of the great battlefield—the battlefield of the Great War, the one that happened during the Primordial Era.
She remembered meeting her first human undead there, since, to her shock, she couldn't raise any dead spirits there. It was like some laws suppressed her from doing that.
However, the spirit she met became her first trump card, which she used to gain access to even more battlefields.
Her necromancy is the grave-robbing kind. However, she also has a class ability that allows her to merge multiple undead to form more powerful ones.