Well, there's no specific "wonder type" that will beat the game, but just make sure your party has a balance mix of move/ Pokemon types. Just keep in mind thatthe elite four rooms, starting at the left are: ghost, dark, psychic, and fighting, Alder/N/Ghetsis have no specific type.
You need to beat the elite four before you can get Zekrom.
Have the Pokemon types you will need most in the place you are going.
to beat phoebe you will need some bug types or dark types to beat glacia you need electric or grass to beat drake you need dragon or water and sydney fire and fight and last but not least steven the master of steel to beat him you will need fire and rock
you need water types or flying types and they are high level
you need Pokemon that are strong and that an effective advantage over every elite four trainer. to beat the champion u need various Pokemon that have advantage types
to beat your dad you need fighting types like MACHOP.ect
Relicanth can be found in the grass underwater..u need dive for this.
To transfer your Pokemon from diamond to white you first have to beat the game in Pokemon white. After that you have to go to the Pokemon transfer lab, go up the steps and speak to the scientist. Then you need another DS that has your Diamond Pokemon in it, go to DS download play on the main screen and you can choose six Pokemon to transfer from your storage. 1) You must have already beat the Pokemon White Game 2) You need 2 DS's 3)The Pokemon that you want to send to Pokemon White must be in your storage in the Pokemon center in Diamond.
If you mean what types you need here they are. 1. Ghost or Dark for Shauntaul 2. Fighting or Bug for Grimsley 3. Bug, Ghost, or Dark for Caitlin 4. Flying or Psychic for Marshal
In Diamond and Pearl, Palmer has Milotic, Rhyperior, Dragonite, Regigigas, Heatran and Cresselia, for Milotic you can use an Electric-type such as Pikachu, Electabuzz, Jolteon, Zapdos, Raikou and Ampharos can beat it, Grass-types such as Bulbasaur, Leafeon, Chikorita, Meganium and Skiploom and Water-types such as Squirtle and Totodile can beat Rhyperior, Ice-types and Dragon-types can beat Dragonite, Fighting-type Pokemon can beat Regigigas, Fighting, Ground and Water-types can bet Heatran and you can use Dark, Ghost and Bug-type Pokemon to beat Cresselia.
Well Claire has dragon types so you need Ice types to defeat her.
There are no Pokemon that you NEED. I recommend using rock and ground types (e.g Steelix, Rampardos, Golem). a quagsire would help too