Honchkrow

With a base Attack stat of 125, Honchkrow is the perfect definition of what the mafia should be. With a wide movepool that consists of one of the best priority moves in the game, Sucker Punch, Honchkrow can easily pick off weakened opponents. When Honchkrow isn't using Sucker Punch, it can rip teams apart with Brave Bird, which hits an unbelievable 180 base power after the STAB boost is calculated. Also, unlike most Flying-type Pokemon, Honchkrow can hit Rock- and Steel-type Pokemon with Superpower, which has a chance to OHKO even Chople Berry Tyranitar. If that didn't make Honchkrow good enough, it also gets two viable abilities, one that makes it immune to sleep inducing moves; the other giving Honchkrow an Attack boost after every KO it gets, making that base 125 Attack stat look even scarier. However, Honchkrow has its faults. With a very disappointing (for a Flying-type, at least) base 71 Speed and thin defenses, finding an opportunity to outspeed and KO the mafia bird isn't very hard to do, especially for Pokemon that resist Sucker Punch. However, it's called the Big Boss Pokemon for a reason, as teams without an effective check to Honchkrow will get torn apart with ease.