The strongest trainer in the game besides the one's in trainer tower is your rival is the current champion of the Pokemon league if you defeat the elite four you have the opportunity to defeat him.
The champion is your rival.
Simply defeat another trainer.
You can get Mantine in the Tanoby Ruins and the Trainer Tower by surfing.
King's rock, Dragon Scale, Up Grade, Metal coat.
Kings rock by the way you can earn it from the trainer tower and can be found on one of the islands.
There isn't a trainer that has scyther.
cheating
Mewtwo!
you cant
i dont now about a trainer but you can cathch it at mt moon
in the trainer tower . it is a reward.
The champion is your rival.
Simply defeat another trainer.
beat a trainer and search the Pokemon up in your Pokedex
The Ultimate Horn in Leafgreen is not an item, it's a pokemon. Heracross. You can find him on island 6 in the paddock on left from the horn house.
Well no but u can get a code to turn ur trainer into him
you cant. the trainer will block the ball.