Replying to this comment to get the answer to both of you. XD
Okay, me personally? I envisioned wakers as like... luring people in with a call for help. So yeah, they're in enough control of their minds to call for help, but not enough to actually stop themselves from what they're doing, if that makes any sense. As for knowing their dead, I'd say that fresher wakers, ones that were just killed, might be aware but I'd always considered their memory degenerative, you know?
Still... creepy thought, I know. XD They're the creepiest to me.
Runners, though... I always thought, like... they'd run as long as they could. They don't tire like people do, so until the person actually escaped to a safehouse, they'd keep going, you know?