its your choice.
think about these things.
u could have the move lock on and a move that kills the Pokemon in 1 hit like sheer cold or use good skills.
Chat with our AI personalities
you cannot ever beat the battle tower. but if you have completed the sinnoh pokedex then the battle tower will help you complete it. you can battle at the battle tower as long as you want.
There is no Battle Frontier in Pokemon Diamond and Pearl. Only the Battle Tower.
yes
just keep winning the battle tower till you face him
in the battle tower