Supernovas

Super Rookies, also called Supernovas, is a term that is used to refer to any rookie pirate who has managed to earn a bounty of over Beli100,000,000. A pirate's impressiveness and first-impression strength is usually dictated by the bounty he or she earns. Therefore, the higher the number, the more fame and respect the said pirates receive. Any rookie pirates who manage to receive a bounty of over Beli100,000,000 before they enter the New World are considered to be impressive, as it marks that said rookie has committed criminal acts of catastrophic degrees. However, once past the "Paradise" half of the Grand Line, bounties of around Beli100,000,000 are considered common and even weak.
While bounties of Beli300,000,000 are highly impressive, a pirate with one can still be considered a rookie. A pirate may ultimately shed their rookie status after several years of regular pirating activity.

Photo Credit by thelucasrbp

One year before the start of the series, Cavendish gained a high reputation among the rookies, with a bounty of Beli280,000,000. A year after he earned his bounty, the Worst Generation's arrival overshadowed him, causing him to develop a grudge against them. Captain of the Beautiful Pirates, he was forced to flee to sea and become a pirate after inadvertently causing several incidents in the Rommel Kingdom.

Two years before the current storyline, eleven Super Rookies arrived at Sabaody Archipelago almost simultaneously. Collectively, they are known as the "Eleven Supernovas" (11人の超新星 Jūichinin no Chōshinsei?). These eleven, alongside Blackbeard, were considered to be the Worst Generation (最悪の世代 Saiaku no Sedai?) to ever come to existence, due to their individual actions bringing great (or terrible) changes to the world, leaving deep and lasting impacts.

One year after the Worst Generation's rise, at least another Super Rookie earned his fame: Bartolomeo the Cannibal, wanted for attacking innocent civilians. He is hated and despised by many people, pirates and citizens alike. Captain of the Barto Club, he was inspired to go to sea after witnessing Luffy's actions.

In the current timeline, came at least two more: Caribou and his brother Coribou, both well known for killing Marines. Though both brothers were impressive in their own rights, neither of them were comparable to the Worst Generation. They are co-captains of the Caribou Pirates.