Just generated my first world in 31.19 and decided to look through Legends for a bit before cracking into the game to see what demon types there might be, etc.
I noticed that there were six Bronze Colossi (!) listed as killed in worldgen; given how durable they usually are this surprised me so I looked to see what mighty force took down the things.
What I found was... well, see for yourself:
Something seems to be going very, very wrong here. I found the same thing was true of most of the other colossi, as well as several Hydras. In fact, of all the Megabeasts listed as having "died" in worldgen, only one Colossus and two Rocs actually seem to have stayed dead after being killed. I'm not 100% certain
they're really dead, either, as one Hydra apparently laid low for 500+ years after being killed in battle before attacking some more humans.
They're not listed as being "zombie" or "skeletal" so far as I can tell, and to my knowledge even before creatures like Zombie Dragons weren't actually generated from normal Dragons that died and then underwent X process - Even if they were, Bronze Colossi being inorganic I can't imagine that such a process would apply to them, anyway.
This seems to be a pretty serious glitch; I know that the bug tracker is used for reports now but I figured I'd make a thread here to see if anyone else has experienced this problem as well, or can possibly figure out what's going on here. I might make an Adventurer and try to track down the phantom Beasts, but I don't have time tonight.