Board Thread:General Discussion/@comment-6192846-20150822000535/@comment-173.21.55.4-20150916223840

I think that since malice was causing normal people to suddenly become killers, the only requirement to get on the ark was to have never killed anyone. Seth (if we assume the scientist is Seth) may not have killed anyone yet and would have been given a pass on the ark. If only so many people could be brought aboard, then they would've only allowed the people who were the  least likely to go on a murder spree. Levia had to have been the last person on the list, and Seth was right behind her. He would have been able to get on that list of passengers of Levia didn't meet that requirement.

She didn't kill Behemo, so she could still get on the ark, and because Behemo was family, he was allowed on as well. Seth being a mask could've easily been a stowaway.