Blackbelly Howler

Blackbelly Howler (ブラックベリーハウラー), also known as the Black Devil of the Beastial Apocalypse (ビースト・アポカリプスの黒悪魔), is an Longinus-tier Sacred Gear wielded by Reinhert Quarta.

Summary
When Reinhert was born with the Sacred Gear Blackbelly Howler, it was one of the rare instances where it already had its Balance Breaker fully activated. Because of this mother; Xenovia Quarta would often train him to help be able to master it. At some unknown point in time, Reinhert decided to name the devil Dökkálfar.

Appearance
Blackbelly Howler has the appearance of an giant navy colored, horned demon, with goat legs and an purple snake for an tail.

Abilities
Blackbelly Howler has the ability to summon a giant devil that is capable of moving independently from its wielder with its own instinct. The devil can create and control blue hell flames, capable of incinerating angels, with ease.

Shining Eyes
Shining Eyes (輝く目, Kagayaku me), also known as the Eyes that Shin in Incineration, is the Balance Breaker of Blackbelly Howler, which Reinhert had already awakened from the moment he was born. Dökkálfar dissipates, and transforms into hell flames and surrounds Reinhert, that transforms Reinhert into an Dökkálfar-like creature. In this form, not only does Reinhert gain enhanced strength and durability, but he can also create and control hell flames, capable of incinerating 3 of the 9 realms in Yggdrasil. Unlike most Balance Breakers, this form requires a chant to activate.

The chant Reinhert recites to activate this form is as follows:
 * << — I sing the anthem of incineration of Helheim, Jotunheim, and Svartalfheim >>
 * << — I celebrate the cremation of six hundred and sixty six, gods >>
 * << — The roots and three realms submerged in flames, dyed with Jotnar's blood >>
 * << — Thou shall perish by my blood soaked claws >>
 * << — To be something of death, that sings the cremation melody, atop your smoked grave >>

Trivia

 * The appearance of the Blackbelly Howler, is based off the monster, Gleam Eyes from the series Sword Art Online.