Mismagius is my first 6IV pokemon (which I got by unlikely luck, at like 8 eggs of a 5IV and a 3IV parent). She's EV'd mostly in HP and Defense so it can actually take a physical hit here and there, but is balanced overall.
Her natural high speed and Sp Attack let her sweep occasionally. For which she is equiped with Nasty Plot, Power Gem (For those Mega Charizards Y), Will-O Wisp and Hex. I think of her as a sweeper that is not fragile and can cripple some of her checks.
Gourgeist is tanky as they come. Only EV'd in Defense and S. Defense. She's a stalling wall that tries to propagate Will-O-Wisp and Leech Seed, then stall with Protect and Phantom Force.
Beedrill is a strange mon that I run mockingly, mostly. He's always on an Assault Vest. (Beedrill's special defence actually doesn't suck) He carries Swarm, to lock on some things it can check (specially attacking water types, some figthing types that don't carry earthquake, fairies, etc). Poison Jab as main stab, U Turn for fleeing while bringing someone safely and Fell Stinger for the occasional killing boost. He's more reliable that you'd think.
Lampent I just caught. I believe Chandelure is supposed to be a frail special sweeper, I don't know, go nuts on this one. --- 3DS FC: 270716224708 In game name: Amarq. Fighting Safari: Machoke-Pancham-Riolu.