Kid Pirates

The Kidd Pirates are an infamous and notable rookie pirate crew discovered on the Shabondy Archipelago around the time the Straw Hat Pirates arrived there. Like the Straw Hats, this crew has two bounties above one-hundred million belli, but both members have higher bounties than the respective members of the Straw Hat crew.

Pirate Flag
The flag used by the Kidd Pirates differ from most other pirate flags in the way that it is a smiley(something mainly seen, used by North Blue Pirates only) with a stitched together mouth.

Crew Strenght
They are notable for the massive amount of damage left in their wake as they traveled through one of the other paths of the Grand Line towards the New World.

Furthermore, the entire crew easily survived the Haki released by Silvers Rayleigh.

Trivia

 * There is possibly a heavy metal or rock theme to the crew, considering Kidd's rock star resemblance, Killer by wearing a helmet which look like those used by Daft Punk and the fire-breathing crew members looks like the Iron Maiden Mascot, Eddie.
 * Their flag greatly ressembel a smiley used by the Hard Rock/Nu Metal band Stone Sour