Physic or Flying, but id choose flying because they r easier to train up . I beat the Veilstone City Gym Leader in Diamond / Pearl & Platinum with Fighting & Flying types.
i find that either machoke(evolves from machop) or medicham(evolves from meditite) are both good but if you dont like them use harriyama(evolves from makuhita)
Poison-type Pokemon are most weak against Ground and Psychic-type attacks, unless it's a dual-type and resist those types.
Ground Type moves as well as Psychic Type moves are super effective on a Poison Type pokemon.
Flying Types and Psychic Types.
Psychic and Ground are your best bets
dragon
Fire type
fire type is weak against palkia it is a water and dragon type Pokemon
Fire type Pokemon or fire type moves beat electric Pokemon.
There are many Water Type Pokemon in Pokemon Platinum, however, there is only one strongest one. That Pokemon is Palkia. Palkia is one of the Main Storyline Legendaries in Pokemon Pearl, it is a Water/Dragon Type. If you are looking for the strongest Non-Legendary, your best bet is Gyarados. Any exceptions?
I believe if the Pokemon holds it it boost the Dragon-Type moves.
you give it two a Pokemon that knows dragon type moves.
Steel-type and Dragon-type moves are supper effective on dragon-type Pokemon :)
Dragon and Ice Types
Fire beats grass bug steel and ice Grass beats water rock and ground Ground beats electric fire and rock Rock beats flying dragon and steel Water beats rock fire and ground Flying beats grass bug and fighting Bug beats psychic and grass Electric beats flying and water Dark beats dark psychic and ghost Psychic beats fighting Ghost beats psychic Dragon beats dragon Ice beats dragon flying and grass
Ice, Fairy and Dragon-typed moves are very effective against Dragon.
Ice, Fairy and Dragon-type moves are super-effective against Dragon-typed Pokémon.
Electric
no Actually yes. There are some Pokemon (dewgong for example) that are water and ice and ice beats water.
From my experiences, Rock, Ice, and Dragon. I'm not sure about electricity because altaria is also the dragon type.
Kingdra is a dragon and water type pokemon.
grass types
Dragon type is good to Dragon type. I think it is more like water or grass. I am no sure Ice?! Im not the guy above: Dragon and Ice are super effective against Dragon type Pokemon
Do you mean type advantages?Well if you mean type advantages,then Fire beats Grass,Ice & Bug;Water beats Fire,Ground & Rock;Electric beats Water & Flying;Grass beats Water,Ground & Rock;Ice beats Grass,Ground,Flying & Dragon;Fighting beats Normal,Ice,Rock,Dark & Steel;Poison beats Grass;Ground beats Fire,Electric,Poison,Rock & Steel;Flying beats Grass,Fighting & Bug;Psychic beats Fighting & Poison;Bug beats Grass,Psychic & Dark;Rock beats Fire,Ice,Flying & Bug:Ghost beats Psychic & Ghost;Dragon beats Dragon;Dark beats Psychic & Ghost;& Steel beats Ice & Rock.Finally!Hope that helps!