Marcus
Marcus sped up, walking in front of Forest. Now walking backwards, he leaned in and flashed her a grin. "Sounds fun," he said, his eyes sparkling with excitement. "Lets do it."
Mason
Mason stood at the edge of the barrier, looking down at the loose pile of sleeping bodies. After dusting his hands of in a gesture of victory, he looked to the building, only to see a familiar figure gracefully spinning towards his position.
"You... killed her?" he asked, looking at the pirate with an open mouth. She looked really strong. He could't believe he killed her so easily. "Was it too hard to capture her?"
That would explain why she killed her. There was no reason to risk his own life just to please the boss.
Ruler
To occupy time by erasing the sinful creatures known as vampires. To protect your master and her family. There was no war, so there was no reason to fight. But he also had no reason to protect his master's way of life. While she seems like a nice mage, he simply did not love her in the same way that this servant loves her master. The way Anastasia casually brought up the creatures suggests that they are not an enormous threat, or at least, she could handle them without his assistance.
"I see," he said, nodding. "So you never had goals of your own to give up to start with. You only seek a simple life with your master."
The priest turned to his master, frowning as his gaze enveloped her form. With a deep low tone he said, "Master, I believe coming here has been a mistake. There is no place in this world for a heroic spirit that has not fought in the grail war. I must ask that you release me from the contract. I do not wish to be a nuisance to you."