Ghetsis will be in front of Black City if you are using Pokemon Black, and White Forest if you are using Pokemon White.
You don't.
yes when you go find one of the sages at relic castle when you are almost where ghetsis is you can battle onix and sandslash. after you find ghetsis you can also fight volcarona
After finding the 6 Sages(Ghetsis and N must be in Sinnoh), you go onto your adventure,completeing the PokeDex.
Sadly after months (minutes :D ) of research, I have finally accepted that Ghetsis cannot be found even after you find all the sages in Pokemon Black/White. There are rumours though that he has been spotted near Black City/White Forest, depending on which game you have.
You can only find SIX sages, Ghetsis and N disappear. Idk why they made it like this, Maybe they will make there first franchise from this.
im pretty sure you cant find him after you beat him at n's castle
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
Well you could go to white forest on white and find ghetsis on black go to front of black city
He isn't anywhere... N also disappeared but will probably come back in the sequel due to the preview. I've searched everywhere and hes nowhere 2 be found :(
You cannot find N, the leader of Team Plasma after he leaves his Castle after you defeat him and his Dad, Ghetsis in battle in Pokémon Black and White.
Well you defeat alder and he will register your pokemon on the hall of fame. After that you have to find all seven sages including ghetsis.
First, you have to get all 6 sages that are hiding, while your doing that, after you get one sage, looker comes and says that the seventh sage (Ghetsis) is notwithstanding, which means that Ghetsis is not arrested yet, so you have to find him either by beating the elite four again, or finding him behind the trees in white forest/black city.