Find ALL the trainers beat them all, and then fight the Gym Leader at the front.
Beat the GYM LEADER [=
you beat the gym leader
Beat the gym leader
Beat the league
The Fifth Gym in Pokémon Pearl is the Ghost Gym so use Dark-type moves.
you must go down cycling road and head for hearthome city!
Simple. You need to beat the gym leader in Eterna City. She is only the second gym leader and her Pokemon are fairly easy.
in eterna city
You have to travel to towns that have gyms and then try to beat the gym leader.
In the sinnoh pokedex, there is Infernape. In the national pokedex there is Charizard. I hope that helps!!!!!!
you find him
Celestic Town, after you beat the Gym Leader.