In-Game Team HelpCan't defeat the Elite Four with your current team? Well then, this is your place! Ask for team help concerning in-game play. Any teams meant for battling other people must be posted in the Battle Center's main forum instead.
Slaking is really strong, though its ability (Truant) is horrible. I'd recommend Flygon or Dusclops for replacements, but if you want to keep Slaking, it's up to you.
As for Ralts and Abra... Alakazam is strong and fast, but Abra doesn't get any good moves unless it evolves into Kadabra, or you give it TM's. Also, you have to trade to evolve Kadabra. Ralts, on the other hand, can reach its final evolution stage by leveling, and it can learn Thunderbolt. Therefore, you should go with Ralts.
Thanks for the reply, I decided to go with ralts, and keep slacking. Would it be dumb to replace aggron with dusclops, though? Because I don't love Aron that much...
Not really. Aggron is a cool Pokemon, but it has two 2x weaknesses in Fighting and Ground, and it can't learn any Rock-type moves by leveling. The only real reason to use it is Earthquake, but then again, you could give that to Blaziken, Slaking, or Dusclops.
In Pokemon Sapphire and Emerald, Duskull can be found in Mt. Pyre, on the fourth floor onwards, and on the summit (where the two elderly people are). In Pokemon Ruby, they can be found in all of Mt. Pyre, as well as on routes 121 and 123.