You should at least have a Lead:
Whimsicot @Focus Sash
EV: 252Speed/130Attack/126 HP
Description: Whimsicott is a lead that starts right off with priority Taunt, thanks to Prankster. Thus preventing the foe from pulling off any weather moves, entry hazards, and status conditions. If the foe was using a non-attacking move, it then uses priority Encore, forcing the foe to repeatedly use Struggle. After it pulls off a Trick Room, it uses a ‘slow’ U-Turn to safely switch in a sweeper.Works like a charm for me.
As for Sweepers:
Rampardos @Wide Lens
Ablity: Mold Breaker
EVs: 252Attack/252 HP/4Defense
Description: This is the sweeper you should switch in after Whimsicott, Start right off with a Subsitute, to remain as a threat even after Trick room wears out. The item Wide Lens grants 99% accuracy for Zen Headbutt & Rock Slide, having a base 165 Attack, it can pretty much kill anything that gets in your way.
Conkeldurr @ Flame Orb
Description: This can be treated as a Backup Sweeper, it boasts Mach Punch for Piority even out of Trick Room, Drain Punch for staying as long as possible. The item Flame Orb Burns it, making it's attack higher due to Guts, and attack won't get lowerd as usual thanks to guts, after a few Bulk Ups, a single Mach Punch can knock out a Metagross at 90% HP. Smack down for flying types.
As for your Dusklops, I get it's a wall, but try this:
Claydol @ Light Clay
Description: Claydol, Claydol, Claydol... The ABSOLUTE WALL! As the only Pokemon with Trick Room AND rapid spin, it can be a real threat to foes. The Double Screens are to make your team even Bulkier. It can switch in to most entry hazards due to Levitate, try this guy, trust me.
As for the others, get them your self.
P.S. This is funny: It's from Smogon.
I know, I know: Clamperl. Seriously, don't laugh, though. Thanks to its unique item, DeepSeaTooth, her Special Attack reaches 542. Unfortunately, she does not wield the same defensive prowess, so Trick Room users that can get her in safely with Explosion or a "slow" U-turn are greatly appreciated. Once in, she is a true menace to the opponent, blasting off incredibly powerful Surfs, Ice Beams, and Hidden Powers. Substitute is a great option for her, as it allows her to scout the opponent and keep up momentum outside of Trick Room.