walk into the great marsh and theres a person there they give you HM defog
You find the HM Defog in the cave in solaceon town where you find the unknown
The HM defog is in the grate marsh.the guy on the right has it.
That HM is not in the game. I'm sorry
you find defog at the safari zone right when you walk in you go to a girl and she gives you defog Toe311,but its diferrent on platinum
you get hm strength and hm defog after defeating two gym leader.Fantina(defog) Byron(strength).
Defog did not become a move until Generation 6 so you will not be able to find it in LeafGreen
You will find Unown in the Solaceon Ruins and the HM Defog.
The HM Defog is in the safari zone in Pastoria City.The first guy when you walk in will give you it!:)
right next to the snowpoint city
You can find the HM defog in the lowest floor of the unown ruins place. You have to read the wall and go right to the bottom and its there.
You can find the HM Defog. Also, all the wild Pokemon are Unown.
It is in the part of the game that is full of fog but if you go before that i think in a cave HM defog is in there.