Scizor@Leftovers
Impish Nature
EVs: 196 HP/252 Def/56 Sp. Def
-Baton Pass
-Silver Wind
-Agility
-Swords Dance
It's not UU, and it doesn't need Speed, especially not a Jolly nature which does next to nothing with the crappy base stat. You've got Agility, it doesn't need to outspeed a thing without it. =P Put those EVs into HP instead and give it Impish nature to give it a survival chance.
Gligar@Salac Berry
Jolly Nature
EVs: 232 Spd/252 Atk/20 Hp
-Earthquake
-HP Flying
-Rock Slide/Substitute
-Swords Dance
Pwhee Gilgar...although you could use Substitute instead of Rock Slide to grant it some status protection and extra SDance time/protection. That way, you would also have a convenient way of dropping HP in a controlled manner to activate the Salac. Lefties give it more recycling value, though, and there aren't really that many things in UU that can outspeed a Gligar, so meh. :\
Clefable@Leftovers
Modest Nature
EVs: 236 Sp.Atk/252 Hp/16 Sp.Def
-Calm Mind
-Thunderbolt
-Ice Beam
-Softboiled
Ehh...whatever floats your boat, I guess, but with these EVs it's easy pickings for any physical sweepers which, combined with Clefable's poor Speed, isn't too hot. At least put the Sp.Defense EVs into Defense, you'll get quite enough from Calm Mind, maybe divert some Sp.Attack into Defense as well.
Mr.Mime@Macho Brace
Timid Nature
Evs: 252 Spd/252 Sp. Atk/4 HP
-Calm Mind
-Psychic
-Trick
-Torment Baton Pass/Substitute
Wow, it's a pokémon with over-maximum EVs...-.- Macho Brace tricking is a new one, but I suppose it can work. However, since you're CMing anyway you'd be better of going Timid than Modest. Also, absolute maximum Sp.Attack on Mr.Mime is kind of yeah, it's not that strong so it will still need to CM for real power. This being the case, you should have some more EVs in HP and defenses to keep it alive. Also, I fail to see what Torment is doing for you on this set. Try Baton Pass to send over the stat boosts to other team members or Substitute to help keep it alive while CMing.
Jumpluff@ Leftovers
Careful Nature
Evs: 252 Spd/128 Def/124 Sp.Def
-Encore
-Leech Seed
-Substitute
-Sleep Powder Hidden Power [Flying]
Nyah, HP Flying to handle Hera since you are stepping onto his turf just by taking this pokémon onto your team. Anyway, it's always nice to have something to fall back on if you end up Taunted or suchlike. Also, try adding some HP (Final should be divisible by 16) to maximize your efficiency with Substitute and go for an Sp.Defense boosting nature since it will help
Quagsire@Leftovers
Brave Nature
Evs: 252 Hp/252 Defense/4 Atk
-Curse
-Earthquake
-Ice Beam
-Rest
Gawd...this EV spread is so wrong. -.- Why are you wasting almost half your EVs on boosting that abbysmally poor Sp.Defense stat when it's going to be average at best? Stick it in Defense and Attack instead. Yes, Attack, I'd say getting a bit more of that. Also, the Sp.Attack should be good enough to OHKO a standard Gligar with one Ice Beam, and should preferably put a good dent into Meganium and the like as well.