Who are the seven deadly sins?

Seven Death Knights is one of the knights of Leonid Kingdom founded by Meriodas. There are only seven members, but each member is a very powerful member. All seven people committed crimes that they thought could not be redeemed, and they took the crime as their code name.

Seven culprits

The members of the Order of the Seven Deaths are: Meliodas, the most jealous Diana, the crime of greed, the crime of laziness (Harlequin), Gowther, the crime of lust, Marlene, the crime of gluttony, and Escanor, the crime of arrogance.

Source: The Complete Works of Seven Major Offenders