[quote=@Alternax]
X saw him on the recording, I'm assuming there are multiverse cameras or alerts for things like a teleporting carcass hitting a village, and he assumed he disappeared because he wasn't there when he arrived. But obviously I see that some people have problems, which I can change, and I'm kinda wondering why nobody called me at fault earlier.
[/quote]

I don't think multiverse cameras would be a thing; that'd just be impractical. Instead, you should have a scanner looking out for interdimensional energies from warp travel. The Warpwhale coming out would require a massive tear in the fabric of space, and the beast itself would basically radiate energies from the Warp, since it lived there and the Warp is a dimension of pure horror. Then you send a probe or agent down to manually see what came out of said rip. In this case, it's half a warpwhale carcass leaking a bunch of legsharks and other monsters.