Who's The Necromancer?

Sylvia's brother and the three men picked all paused, they didn't know what was happening. They came here to check on Grey, how come he's suddenly picking them to go with him on an expedition with the Giants. What was worse was that, the young lady who was the strongest amongst everyone present wasn't even picked by Grey.

"Wait, what's going on?" The young lady was the one who asked the question.

"They're going with me on an expedition, of course, it's their choice if they want to or not. If not, I'll just call my friends over. Although, it will take a while, they wouldn't mind." Grey replied in a nonchalant manner.

"You know the reason I'm asking this question." The young lady said, staring straight at Grey's face.

Grey didn't flinch, he took a glance at her and said, "I don't know you, neither do I trust you. I can't let you watch over my back."