Don't bring Pikachu to the Pyramid. The Pyramid doesn't allow you to bring your own items, and without Light Ball, Pikachu is just an extremely fragile pokémon with zero offence and will add pretty much nothing to your team. In fact, I'd say Pikachu is too slow and fragile for the entire Battle Frontier if you want to go far. Slow pokémon can be good, but they have to be able to take hits before dishing them out and Pikachu dies to any STAB move from fully evolved pokémon. Even with Light Ball its offences are very good but Pikachu won't be OHKOing things that it doesn't hit super-effectively, at best 2KOing, and Pika just doesn't have impressive super effective coverage. There are simply too much pokémon that beat Pikachu one-on-one easily for it to be a good choice.
Pikachu is the worst of your team, but in fact every one of them is sub-par for Frontier purposes. You need to use strong pokémon, yours are UU or even NU in competitive terms for a reason, and that reason is that they are outclassed by better ones. Altaria is not nearly as good as Salamence, Aggron is not nearly as good as Metagross, Azumarill doesn't get a good synergy between special STAB and Huge Power, Smeargle has terrible stats and should only be used for niche uses (like Baton Passing Ingrain), and Blaziken can work but is quite fragile and slow.
When going to the Battle frontier, go with pokémon like Tyranitar, Salamence, Latios, Starmie, Metagross, Suicune, Snorlax, Zapdos, Blissey, or Swampert.
Last edited by Sceptile Leaf Blade; 3rd February 2013 at 12:37 PM.
Master balls are the cheapest thing ever invented. It's more fun catching everything with balls that can fail. 'caught Latios in the wild without master ball ftw'