If you have battled him he will give you a tyroge then nothing more happens
Mt. Mortar
In Pokemon Gold, Silver, Crystal, Heartgold, and Soulsilver the Karate King is in Mt. Mortar, East of Ekruteak City. He will have a Hitmonlee and Hitmonchan, and give a Tyrogue upon defeat if you accept it and have a space empty.
No, Mt. Mortar is not a required location. You do have to go there if you want to get Tyrogue, though (you get it after beating the Karate King inside).
follow the steps in youtube i found onePokemon HeartGold / SoulSilver- How to get to Kiyo the Karate Master
Normally, you would battle him. He has a Hitmonlee and Hitmonchan, and will give away a Tyrogue upon defeat.
Mt. Mortar
Noo.
The Karate King is in the basement of Mt. Mortar, East of Ekruteak in Gold, Silver, Crystal, Heartgold, and Soulsilver. He has a Hitmonlee and Hitmonchan, and will give away a Tyrogue upon defeat.
Go to Mt.Mortar and find the karate master and battle him but leave one empty space in your party you have to beat him and he will probably give you Tyrogue.
Mt. Mortar in Johto.
in a cave in mount silver or mortar
It's called Mount Silver and you can battle Trainer Red and capture Moltres there.