We all know that Envy died but thats what he wants us to think but he really a Klingon beating him until the Klinon was tired (which was 8 and a half days later) the Klingon put him in a meat grinder and fed it to his targ.
Howl died because a group of anime fans were not being careful with an EMP bomb and "accidently" blew out the entire power in the city that howls new and improved flying castle was in, the only death was Howl who died in a local hospital 3 days later.