It means you need to reset the action replay. I forgot how i did it but you can look up how on the codejunkies website.
what do you mean
There is no Mean Look TM in diamond
If you mean buneary on diamond and pearl, I have 15 of them. buneary is a Pokemon only on Pokemon diamond and pearl
WiFiConnection
Golbat uses mean look in Pokemon pearl but i am not sure about Pokemon diamond and pearl.
i don't know, but giratina is a legendary Pokemon if you mean him
you teach a Pokemon that move or use a TM
Crobat
original trainer
which island do you mean?
i think you mean Dialga
If you mean diamond & Pearl, then in Diamond, Dialga and in Pearl, Palkia