Answer 1

There is Golurk,Cofagrigas,Chandulure and all of their pre-evolutions as Ghost Types. For Dark Types there is Hydregion,Bisharp,Krookodile and all of their pre-evolutions.

Ghost Types:

Dark Types:

Comments

thaks alot thats going to be my ghost/dark team. now i just got to get a new cofagrigas, a golurk, up my zweiolus's lvl to hydregion and up my krokorock's lvl.

that going to take like 5-10 hours tho :/

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what about after you get the the national dex

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Don't forget Scrafty.

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i just put three of each types

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Forget Krooky!! Scrafty FTW!!!

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If you are looking for some more defensive pokemon you might want to throw in Jellicent or the unpopular Scrafty.

Answer 2

You could also have a Sableye.
Found in the challengers cave after you finish the game.
If you need it before the E4,I have 4 sableyes ready for trade,I can trade as soon as I get Wi-Fi,(which won`t be long)

http://Pokemondb.net/pokedex/sableye