Ghetsis uses the following Pokemon listed below, in addition to their abilities and moves:
Cofagriggus (Ghost) Ability: Mummy
-Toxic
-Shadow Ball
-Protect
-Psychic
Hydreigon (Dark/Dragon) Ability: Levitate
-Dragon Pulse
-Fire Blast
-Surf
-Focus Blast
Bouffalant (Normal) Ability: Reckless
-Head Charge
-Wild Charge
-Earthquake
-Poison Jab
Seismitoad (Water/Ground) Ability: Swift Swim
-Muddy Water
-Rain Dance
-Earthquake
-Sludge Wave
Bisharp (Dark/Steel) Ability: Defiant
-Night Slash
-Stone Edge
-X-Scissor
-Metal Burst
Eelektross (Electric) Ability: Levitate
-Crunch
-Flamethrower
-Acrobatics
-Wild Charge
When you're fighting Ghetsis it is EXTREMELY important that you have at least 1 move that is super effective against each of his Pokemon, I will go into more depth regarding those weaknesses for each one later. Ghetsis always starts off with his Cofagrius and usually uses Toxic first; Using a Steel-type Pokemon is your best choice since you won't have to worry about Toxic since steel-types are immune to any offensive poison moves, that way you won't have to worry about wasting time using an antidote/full-heal on a Pokemon later in the battle. Try using Dark and/or Ghost type moves if your Steel-type can learn them or if it cannot then use any moves that will get a STAB (Same Type Attack Bonus) when used by that Pokemon.
Ghetsis will typically send out his Hydreigon next, it is EXTREMELY important that the Pokemon you use against it has a high enough speed that will allow it to attack first, usually if you can get a type-effective move in against it before it strikes you can 1-hit KO it. Use Dragon, Ice, Bug, and/or Fighting type moves.
Bouffalant can be a bit tricky since it's move set gives it decent type-coverage. Use a Pokemon that is resistant, immune, or with a high defense stat. Use fighting-type moves against this one.
Seismitoad is a bit less of a problem and can usually be 1-hit KO'ed with a 4x effective grass type move. If you are using a Grass-type against it, watch out for Sludge Wave (unless you are using a Ferroseed or Ferrothorn since they are immune to poison type moves).
Bisharp should not be as much of a problem especially if you have caught Cobalion before you faced the Elite Four, since it is resistant against all of Bisharp's moves. Even if you don't have Cobalion try and take it down with a Fighting type move since it has 4x effectiveness on Bisharp, if you don't have any Pokemon that possess a Fighting type move, then use ground and/or fire type moves.
Eelektross can be a bit tricky since it has no weaknesses. However, if you have a Pokemon with an ability disabling/changing move (skill swap or gastro acid), has mold breaker as an ability, or a move that negates levitate (gravity or smack down) and use it in combination with a ground type move then you will get a super-effective hit on eelektross. If you don't have any Pokemon that fit that criteria then just use your most powerful moves against it, as long as they aren't flying, steel, or electric types.
Hope this helps!
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.
That is not really a question to ask but if you asked who is ghetsis he is one of the seven sages in Pokemon black and white.
After you defeat N and Ghetsis, go to Undella Town and a girl will give you the HM Dive.
you have to have Pokemon white but if you have black you need to trade from someone with white. you need to have completed the Pokemon league then you catch zecrom then you battle N who has Reshiram then when you defeat him you have to battle ghetsis.
Ghetsis should be in front of Black City for Pokemon Black.
No. He leaves the Unova region into hiding.
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.
In Pokemon Black/White when you get all 8 gym badges go to the Pokemon league and defeat all of the elite four's Pokemon when you go to the champion N is there and he will take you to is castle go to the top floor and catch the legendary Pokemon Zekrom/Reshiram and defeat all of his Pokemon then Ghetsis will come to battle you.
That is not really a question to ask but if you asked who is ghetsis he is one of the seven sages in Pokemon black and white.
After you defeat N and Ghetsis, go to Undella Town and a girl will give you the HM Dive.
Ghetsis is not a Pokemon. Instead, he is the final boss of the game's storyline.
you have to have Pokemon white but if you have black you need to trade from someone with white. you need to have completed the Pokemon league then you catch zecrom then you battle N who has Reshiram then when you defeat him you have to battle ghetsis.
You can't. The right hand side of the map won't open until you defeat Ghetsis in the Castle.
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.