TR Mixed Sweeper
Banette @ Bannetite/Sitrus Berry
Ability: Frisk (if using knock off)/Insomnia
EVs: 252 Attack, 252 Special Attack, 4 HP
Shadow Claw/Shadow Ball (To make use of attack/to destroy physical walls)
Sucker Punch/Dark Pulse (As above)
Knock Off/Destiny Bond/Curse/Thunderbolt/Dazzling Gleam (If using mega, Knock Off is best)
Frisk activates at the start, so can be used even with mega evolution, which changes the ability to Prankster. This allows you to know is knock off will be useful. If not mega evolving, curse is a great option, as the lost health can be regained with the sitrus berry. Thunderbolt and Dazzling gleam are for coverage. TR as he's slow, and this is for a TR team. He makes a great sweeper, and is immune to normal and fighting type moves.
You can make this moveset physical, by running the first option for each move slot, and putting the sp.atk EVs into HP. To make it special, you can run the latter option(s) for each move slot, and putting the attack EVs into HP. The status moves are options for either set.