Longinus

The Longinus  also known as Tools that Reject God are the nineteen original top-tier Ancient Gears with enough power to kill Gods, as well as eight additional Ancient Gears that evolved to the same level

Summary
This class of Ancient Gear is specifically named after the Zenith Longinus, the first and most powerful, and unlike other Ancient Gears, that has more than one of the same type, the Longinus are utterly and completely unique, and only one of each may exist at a time. In volume 8, Azazel stated that all Longinus is just a combination of one ability with another. Essentially, they combine powerful abilities that aren’t supposed to be combined.

Out of the twenty six, twenty three have appeared in the series thus far (with another one appearing in another series), but Asriel has mentioned that due to the abnormality on the Sacred system, and the Ancient Gear's ability for growth and change, more Longinus might be born.

Original Longinus
The first 19 Original Longinus made by the God from the Bible.

New Longinus
The 8 new Longinus consisting from the evolution of a Ancient Gear (Aeon Beyond Balor and Melody of Will) and others currently of unknown origin.

Trivia

 * The Longinus Canis Lycaon is a reference to the scientific name of the Eastern Timber Wolf (Canis lycaon), a wolf that lives in Eastern Canada. It may also be a reference to Lycaon, the man that was turned into a wolf by Zeus as punishment for feeding him Nyctimus, Lycaon's own son. The form and the backstory in Canis Lycaon, however, is similar to the Chinese Tiangou.
 * It is revealed in the spinoff Canis Lycaon that Canis Lycaon is a composite of two beings: Lycaon as mentioned above, together with the Ame-no-Ohabari, one of the Totsuka no Tsurugi in Japanese mythology, used by Izanagi to kill his own son Kagutsuchi, whose birth burned his mother Izanami to death.
 * Out of the twenty seven Longinus, five of them are known as the Holy Relics, they are: the Holy Spear - Zenith Longinus, the Holy Grail - Twilight Graal, the Holy Cross - Incinerate Anthem, the Holy Nail - Alphecca Tyrant, and the Shroud of Turin - Sindone Martyrdom.
 * Among the Longinus possessors, there are 14 male Longinus possessors and 10 female Longinus possessors.
 * During the "Kyoto Incident" in Volume 7, the original Sun Wukong tells Georg Faust that he needs to talk with his Longinus to better grasp its abilities. This suggests that the remaining Longinus that don't have a creature sealed inside them, instead have some other form of consciousness.
 * The name Longinus is based upon the legendary and mystical figure of Christian mythology. Longinus, according to multiple Christian communions, is said to have been the soldier who pierced Jesus' side with a lance.
 * Four of the Five High-Tier Longinus user's have sub-species Overdrives.
 * The Longinus are based off the Longinus from the light novel series High School DxD, with seventeen of them having a counterpart/being based off.
 * Zenith Longinus - True Longinus
 * Tempest Prophet - Zenith Tempest
 * Annihilation Maker - Annihilation Maker (DxD)
 * Paradise Lost - Dimension Lost
 * Boosted Pump - Boosted Gear
 * Divine Dividing - Divine Dividing (DxD)
 * Incinerate Anthem and Sindone Martyrdom - Incinerate Anthem (DxD)
 * Twilight Graal - Sephiroth Graal
 * Absolute Dawn - Absolute Demise
 * Canis Lycaon - Canis Lykaon (DxD)
 * Panthera Nemea - Regulus Nemea
 * Innovation Clear - Innovate Clear
 * Telos Karma - Telos Karma (DxD)
 * Aeon Beyond Balor - Aeon Balor
 * Nereid Kyrie - Nereid Kyrie (DxD)
 * Star Buster and Star Slayer - Star Buster Star Blaster
 * Alphecca Tyrant - Alphecca Tyrant (DxD)
 * Unknown Dictator - Unknown Dictator (DxD)