Devil Banishers

The Devil Banishers (デビル・バニッシャー) are a vigilante group of Clover Kingdom citizens who wish to bring to justice anyone associated with devils. The group is later supplanted by the Devil Believers, who worship devils and seek to attain devil power for themselves.

Overview
During the elves' attack on the Clover Kingdom, citizens are killed and injured and entire towns are destroyed or heavily damaged. A few days after the elves are exorcised, the news spreads that the attack was perpetrated by Asta and Secre Swallowtail, the supposed servants of a devil, but when the pair are put on trial by the Magic Parliament, the judgment is postponed for six months and they are allowed to return to their duties as Magic Knights.

Some upset citizens view this a miscarriage of justice and band together in order to destroy anyone they view to be a servant of a devil, which includes those, like Marie Adlai, who were possessed during the attack and caused damage to the Kingdom and its people.

Members
The Devil Banishers wear matching disguises: black, red, and white masks that resemble devil faces; hooded, white robes that are trimmed with black and form swirls on the sleeves and hems; beige shirts and pants which are tucked into the white bandages wrapped around their legs; and black shoes. The masks disguise their voices as well as filter the air they breathe, allowing them to use sleeping gases on targets without risk to themselves.