My personal favorite, and original, set:
Mandibuzz @ Leftovers
Trait: Overcoat
EV 252 HP / 252 Def / 4 SpD
Bold/impish Nature
-Roost
-Foul Play
-Iron Defense
-Swagger/Toxic
Don't take me for a fool because Iron D and Swagger are there. I've been playing this set for a good old time now and...