(forgot ping)

She woke up a few hours later, her head pounding. She found she was back in the lab. Ugh, she thought, what happened? She quickly looked around for the exterminator. Surprisingly, he was nowhere to be found.

Of course not, he had cleverly assumed another human form, this time fully hiding his alien features. His white hair remained, but it was much longer and parted behind his ears. He had also, perhaps foolishly taken off his armor and visor, leaving both strung over a worn, metal chair.
His black jumpsuit wouldn't offer him much protection under a counterattack, but he cautiously kept his rifle propped against the wall next to himself.
Scias intended to keep any others off his case in the rare instance he was recognized. He seemed busy in his corner of the room, working quietly at repairing the robotic avian in front of him.

She looked closer at the human, realizing he was the exterminator.
Who are you? she asked Why did you help me? And most importantly who are you?

"Oh, you're finally awake."
He set down his multitool, glancing back at the girl. Without the visor, he suddenly looked a whole lot less intimidating. His eyes looked strangely human, albeit with a focused white ring that ran just through his red irises. There was a certain cockiness to them as if he wasn't taking the situation very seriously at all.
"A mercenary. You're asking me a lot of questions though. Could ask you the same things, halfbreed. Better start talking."

M-my name is Corasi. Guess you know everything else though... Im just a half-breed alien protector. But why in the universe would you, a mercenary, help me a 15 year old half-breed?

"Corasi.. Nice name." Scias closed a panel on the drone, setting it upright as he stretched slightly, allowing his form to relax as he slowly returned to his previous appearance. He curled his tail around a leg and took a seat on the metal chair.

"Fine. I'll humor you, Protector. Name's Scias. And for your other question, you basically just said it yourself, I just don't like killing kids, okay? Those Exterminators might pay me to take some of their dirty work off their claws when it comes to your filthy ape friends, but even I have standards."

Her yellow eyes danced while she was thinking. She smiled, and said Thanks Scias. I guess you saved me.

"Don't expect it out of anyone else, I'm not even here on this planet to have any stake in the invasion. I might think it's funny to scare the living daylights out of someone like you, but to anyone else, you're an abomination worthy of only someone's round of target practice. Don't forget." He tapped the center of his forehead to emphasize his point.
"Just forget you ever saw me, alright? Don't even think of telling your little Protector buddies. I can't keep risking sticking my neck out for little kids."

First of all, I dont have friends. Second of all, I know everyone could kill me. Third of all, I am not a little kid.