Gallium

In the Hazbin Hotel fan lore, Galim is a powerful, mouthless archangel with a single central eye and a burning flame for hair [Left Behind Fanfiction Wiki, DeviantArt Galim]. As God’s wise but passive-aggressive right hand, he wields reality-warping pyrokinesis and mind-to-mind telepathy [Left Behind Fanfiction Wiki]. His story ends tragically during the Extermination, where he unleashes his six-winged full angelic form to fight his fallen brother [Left Behind Fanfiction Wiki]. Despite their deep familial bond, Galim is ultimately killed in combat by Lucifer, shifting the balance of power between Heaven and Hell [Left Behind Fanfiction Wiki