Cloyster's weaknesses are electric-type, fighting-type, grass-type, and rock-type.
The weakness of electric type Pokemon is ground type Pokemon.
Electric
All known Pokemon have a weakness. But there is only one knoen Pokemon that does not have a weakness and that is Spiritomb he is found in both Pearl and Diamond but it is hard to catch. My reccomendation is get it from a trade in Wi-Fi or a friend.
Nope you cannot battle your Mom in any of the Pokemon games since she does not have any Pokemon that will battle you.
You make all their Pokemon faint and you should vary the Pokemon to their weakness types
Dark Pokemon are Psychic Pokemon's weakness.
The weakness of electric type Pokemon is ground type Pokemon.
Rock Pokemon's weakness is water types so in the game choose the water starter
its only weakness is dragon
The weakness of flying type Pokemon is Ice, Electric and Rock.
there weakness is Grass,water and rock
Ground is electrics only weakness.
As of Generation 5 only the pokemon Spiritomb has no weakness because of the dual-type Ghost/Dark.
The weakness of Mightena is Fighting And Bug types Pokemon!!
It's only proper weakness is dragon type moves
Water and grass
A dragon type's weakness is, believe it or not, is dragon type.