With so many sleep moves, Metal Bursts/Counters/Mirror Coats, and setting up subs or stuff like CM, Taunt should have a mention. Something like this:
Crobat @ Leftovers/Focus Sash/Wide Lens
Ability: Inner Focus
EVs: 252 HP/252 Speed/4 Special Attack
Timid Nature (+SPD/-ATK)
- Taunt
- Hypnosis
- Shadow Ball / Dark Pulse
- HP [Fighting] / Roost
Fastest non-uber Taunt in the game, tying with Aerodactyl. Taunt against things like Blissey, Breloom, FEAR sets, etc. that probably won't attack you directly, then put them to sleep. If against a sweeper, just Hypnosis right off the bat. Shadow Ball + HP [Fighting] hits everything for at least neutral, or you can use Dark Pulse and Roost (Dark Pulse is better than Shadow Ball if you are using only one attack because Normal types are immune to Shadow Ball). Inner Focus even stops you from Flinching against Fake Out users! Max Speed for the speed, of course. I put on max HP so it would be bulky enough, but max Special Attack could also work. Wide Lens for better Hypnosis acc., Leftovers to heal, and Sash for if you feel like it. It doesn't do a lot to Blissey, but it won't like Taunt and Hypnosis.
Someone mentioned Aero earlier, and I think it could work here, too.
Aerodactyl @ Life Orb/Focus Sash
Ability: Pressure/Rock Head
EVs: 252 Attack/252 Speed/4 HP
Jolly Nature (+Speed/-Special Attack)
-Earthquake
-Stone Edge
(For the last two moves, pick two of the following: Fire Blast, Taunt, Crunch, Ice Fang, Aerial Ace, Double Edge)
I use Life Orb Aerodactyl on Shoddy Battle, and it works wonders, especially late-game, when stuff is weakened. Focus Sash is an option, if you want to get in two hits. The EVs and nature are sorta obvious. Earthquake and Stone Edge are a great attacking combination. For the last two slots, Fire Blast could be used for Steel physical walls like Skarm, Forry, and Bronzong, but I doubt they will see a lot of action. Taunt stops sleeping moves, setting up, etc. Crunch has 10 more base damage against Cresselia and Dusknoir, but they still effectively wall Aero unless they are focused on Special Defense instead. Ice Fang hits Dragons, Aerial Ace is for Breloom, Heracross, and STAB, and Double Edge with Rock Head is just for plain damage and good accuracy.