Ghetsis should be in front of Black City for Pokemon Black.
In the dreamyard after you beat N and Ghetsis.
Both Colress and Ghetsis are villains in Pokemon Black 2 and White 2.
If you mean after you find the other sages . well you cant find him ever again you will have to wait for the sequel of pokemon black and white so really you cant find N or Ghetsis ever again in your currant pokemon game
If you mean battle him, you do that after you beat N in N's Castle.
Ghetsis is not a Pokemon. Instead, he is the final boss of the game's storyline.
you fight ghetsis
Ghetsis will be in front of Black City if you are using Pokemon Black, and White Forest if you are using Pokemon White.
Ghetsis should be in front of Black City for Pokemon Black.
Ghestis disappeared after you defeated him and N.
he goes with ghetsis
beat n then you have to battle him
The same as Pokemon black.
You don't. They debut in Pokemon Black and White.
nobody knows.. well, he has disappeared
In the dreamyard after you beat N and Ghetsis.
he is at the pokemon league after you beat all four elites and N