You must first travel to Blackthorn City. Then, you must battle and defeat Claire, the eighth gym leader. Afterwards, travel behind the gym into the Dragon's Den and pass the elders' test (you can answer anything and still get the gym badge). Claire will give you the badge after passing the test.
1, after professor elm gives you a call after your 7th or 8th gym badge. Hope I helped. :) Pete
After you get the 8th badge go see Prof. Elm in New Bark Town and he will give it to you.
Unless your Delibird is pretty high leveled, I don't think that it would be very useful in a gym battle.
Try the game Soul silver then get to the 8th badge it has stuff about dratini (what a bizzare question)
Blue is the 8th kanto gym leder.
move to the 8th gym
after defeating all 8 gyms you will be called upp of psof.elm he will give u the master ball remember u have to go to the dragons den to get the 8th badge
In the original Pokemon Silver you had to beat the 8th gym leader, Claire, then she allowed you to pass.
The 8th Badge in Pokemon Diamond is called The Beacon Badge.
you have to use the HM surf and surf behind the gym and go in the cave. go to the other side of the dragon temple and go in. awnser the old man's questions and the gym leader will come in and give you the badge. This is to get the 8th Johto gym badge. To get the Kanto one search: how do you get to the 8th Kanto gym badge
she would want you to go into the dragons den and fight the old man then she will come and give you the badge................................
the 8th gym when u beet Clair her Pokemon are strong so be careful