-Signal Beam/Volt Switch
His/her role in the team is too be my electric type. Because this is a story mode team, I put strength on so I can push boulders around. If anyone can help decide the punch or thunder that would be swell. Replace Strength with Focus Blast post-game, alongside Power Gem it has really good coverage.
-Rock Slide/U-Turn/Fire Punch
Don't think I gotta explain anything here. U-Turn is a must on Flygon! Rock Slide is still useable though, and Fire Punch could be good for pesky Ice-Types.
He needs help. Any recommendations? The MTs were really kind to Serperior in this game. You could use Dragon Tail, Swords Dance or something like Synthesis to shrug off damage in the first slot though.
Nothing wrong here. It just depends when I get TM Flamethrower. But which ability should I get? Flash Fire or Intimidate? Personally I'd run this set, but the one you had before is still kind of useable, but only use one Fire-type move so that you can cover more grounds. Use Intimidate.
Something sort of similar to what you had before could be
Wild Charge packs more of a punch than T-Fang and Dragon Pulse works well with Flamethrower coverage wise.
-Swords Dance/Shadow Claw
You say he's lame, I say he's awesome. Lucario is incredible but he just needs a better move pool. Please help. Needs a better move pool? Are you crazy!? Lucario has everything it needs!
Hope this helps.