>>31375357>>31375960>>31375978>>31376007>>31376022Varaneous is bugged. I ran into your problem myself and found that its roaming data will sometimes jump to a map that doesn't exist, which is why it's appearing in a different spot than where it normally would if it were on Route 80.
Try battling and defeating the E4, it sometimes fixes it, but if not you'll have to edit your save file.
I really wish Prism wasn't C&D'd so bugs like this could get officially fixed.