Ice, electric, rock of what I know
Fighting types are weak against psychic and flying types.
Rock, fire, and flying type are strong against the bug type.
* Electric * Ice * Rock Go visit http://bulbapedia.bulbagarden.net/wiki/Type_chart_%28Generation_II-present%29
The pokemon that are strong against psychic are bug, dark, and ghost.
Fire-types...and electricity...also flying-types :)
Fighting types are weak against psychic and flying types.
Flying and Phsychc types are strong against Fighting types
Rock, fire, and flying type are strong against the bug type.
Ground type is the only type that is super-effective against ground Water, Flying, Dragon and Electric are poor against it
* Electric * Ice * Rock Go visit http://bulbapedia.bulbagarden.net/wiki/Type_chart_%28Generation_II-present%29
Electric-Type moves are strong against Water-Types and Flying-Types. Electric-Type Pokémon are strong against Flying-Types, Steel-Types, and other Electric-Types.
Ground --------------------- Electric-type attacks (Thunder) are strong against water- and flying-types. Electric-type Pokemon are weak against ground-types.
Rock type Pokemon are strong against flying, ice, bug and fire type Pokemon.
The pokemon that are strong against psychic are bug, dark, and ghost.
Electric Type Pokemon are effective against the following types:WaterFlying
Fighting types are strong against normal types.
the pokemon good against fighting are: flying ground fire (I think)