Last member of team

[Valdoom]

hi

I have bred a Duskull Egg ready to trade over to Diamond but i'm still not sure to have it or not.

The other members are:

Empoleon (Currently Prinlup)
Staraptor (Currently Staravia)
Cherrim (Currently Cherubi)
Gliscor (Currently Gligar)
Gallade

What other pokemon would go well with my team?

what would be a good moveset for Dusknoir?

any help greatly appreciated

 

[MistyLover]

If you post the natures, then I will tell you.