saw ur post in the bulbasaur thread. I've got half a box of bulbasaurs at level 1. Want any of them? you can just breed it to get the nature you want. my FC is in my sig. if u have anything that interests me, then lets trade =D oh, I need a DW gible if u have it. if possible, can it be a DWFemale and Untouched?
Guess it depends on the severity of how poorly made the hacked pokemon is like caught at lv2, fateful encounter, caught at -----------, hacked ability, and or hacked movesets may cause you game to go XP
I'm not exactly sure, I've only used minor hacked pokemon that I didn't know were hacked until I saw their summary of where they were caught and had poke checked only to find out they are hacked never anything else
Like Wolveram said they can cause glitching VERY BADLY I used an AR once when I started on diamond and it completely messed up my game, on my platinum game a pokemon I traded for on the GTS completely corrupted my game and I had to restart it because if I didn't I probably would to have scrapped the game, and I still use it a lot today, but yes hacks or non-legits as you call them are HORRIBLE for your games