Echidna upper body lower dura

"Okay," I said, "Good. But we'll need a way to deal with her. Ballistic, you said she regenerates?"

"Not that fast, but fast enough. Her lower body is tougher, but her upper body isn't exactly vulnerable. I've seen her take bullets and barely even flinch, and that included one to the head. They do damage, maybe, but it heals too quickly for it to matter. And I think she's gotten bigger and tougher since I saw her last."

"When was that?"

"Maybe a week after we got to this city. A while before Coil put in the first vault door, there was just a garage door. I didn't want to risk getting too close, not with the lethality of my power and the damage she could do. Her appetite's increased, so it might be a pretty dramatic difference in strength from the last time I saw her out and about. You guys are going to have your hands full trying to kill her."

- Queen 18.2