Their names are Revive Revival and Hiling Care. Currently, they are staying together. However, the more unpredictable and, therefore, dangerous of the two is Hiling. She no longer has their leader to keep her in check. Revive is unlikely to act against anyone on his own.
Be careful. They've established relations with others here. The best course of action with them for now is to only act in defense. [At this, he stopped and leveled a sharp look at Setsuna. The other Meister was known for being a bit reckless at times. He needed this to sink in.] Do not go after them on your own unprovoked.