What is a good Ghost or Dark pokemon for dimond and pearl?

Question

Ok i need a good dark or ghost type for my team any suggestions? i'd actually like a pure dark or a pure ghost. i can't get darkrai yet so please don't put him down or any pokemon like him that i need to do an event for (i have AR but i need national dex)

My Team:

Prinplup: 29

Monferno:30

Grotle:28

Staravia:31

Luxray:30

?: ? that's the ghost or dark one that i need.

i didn't get any of these with action replay if you think it isn't good, tell me what to replace which one with.

Answer 1

I think you should replace the Prinplup with a good strong Gyrados if there are any.

Answer 2

well i would say get rid of that grotle and get a pachirisu which can be taught all electric type attacks and when you level it up high enough it will be cute and strong my dream pachirisu would be

pachy (nickname)

lv 99

attacks:

volt tackle

thunder

paralyze wave

discharge

  

Answer 3

I think the best one would be Misdreavus witch you evolve with a dusk stone.