Udactho is a towering figure, 20' in height, whose skin is missing. His muscles are bared, his blood vessels flowing openly, his organs spilling out. His skeleton touching the air. His voice is a shrill scream, his odor the stench of waste. His blood burns those who touch it.

He has the power to inflict pain on any who come near him, by mere force of will. His blood is pure baleblood; his voice cacophonic. To hear his shrill cries is to feel one's bones and eardrums and skin break. He can break the soul of a person with his gaze, drain their emotions with his tongue, malnourish them with his breath, and impose upon them intense terror with his visage. He can communicate telepathically when he wishes not to break the bodies of those he speaks to, and with this psionic power he can drain them of knowledge. When he sleeps, everyone within miles of him has nightmares.

His followers are granted power in exchange for pain.

Udactho gives his Name to no one. Instead, he is known by various avoidant-titles: Carnibus in Gyrah; Makhgüi in southern Dabusen; Opanda Thupi in parts of Taggarus; Nahániriape in eastern Palhur; Gan Fheoil in Lyrilla; and more.

He represents pain and punishment. The disruption of cacophony. The cruelty inflicted upon the abused. The agony of starvation and desiccation, the desperation of those stripped of all, the chaos of ignorance. He is arnic power incarnate.

During the last War of the Gods, he was captured by the mafi girma and bound in chains of true iron in a chamber deep below the surface.