I didn't make it!
Hey im a complete idiot i know but what the hell is a trainer on B&W 2 cos i just got BOTG n i cba playin the whole of B&W 2 to get mypet good is a trainer for the pet??? please help me lol ;)
In general, a trainer in any game is a cheat device. Not sure why it's called that. I don't know of any MP trainers, but I'll bet they're out there, so don't ask for any here.