Sunny

When Senna's brother is KIA as a part of taskforce 141 he makes Ghost promise to look after her, knowing what his death will do to her. what Ghost didn't know is that Senna is a force of her own, nothing like her brother and much more like himself, and it terrifies him. Ghost doesn't want her to end up like him, he doesn't want her to completely lose her humanity. But when he look at her, her dark sad eyes already reflect his own.

*only loosely based on different events from the mw2 world. I've played the games but I'm not an expert and prefer to focus in character development rather than perfecting a world I didn't create.