>>22849644All shadows mons here are like that. Trainer difficulty is sort of set by determining what their IVs are. Since they're snagged Pokemon, they get trainer mon IVs.
XD and Colosseum fixed this problem by rerolling PID at purification, which is why if you caught a shiny purifying it could remove shininess.
>>22849658This game is a mess overall. I know it's supposed to be a beta, but that doesn't excuse having a typo in the VERY FIRST FUCKING ROOM OF THE GAME