Odium

"Drink the Odium. It burns through the body. All strength, no pain. A fearsome last stand. A brilliant flash of light and splendor."

- Kasius

The Odium is a black liquid created and used by the Kree. In Kree culture, when a soldier is cornered and outnumbered without hope of surviving, they are supposed to drink the Odium, which briefly grants them superhuman abilities before death.

Kree Last Resort
"What option did I have?" "Glory! Drink the Odium. Fight and die like any of the Kasius family name would have rather than fleeing with your low-born subordinate."

- Kasius and Faulnak

The Odium was created in order to provide defeated Kree soldiers with a mean of making a final stand by greatly enhancing their capabilities before they died. When Kasius was cornered and outnumbered by his enemies, however, he refused to drink the Odium and ran away, which brought shame upon his family and ultimately caused his banishment to the overseeing of the Lighthouse.

Sending Tye
"What happened to you?" "Kasius freed me. I feel no pain."

- Daisy Johnson and Tye

After the inhabitants of the Lighthouse started a rebellion against him, killing his trusted warrior Sinara and destroying everything he needed to beed Inhumans, Kasius retrieved his vial of Odium. He put some of the liquid on his hands and then forcefully made his servant Tye drink it. Tye immediately felt the effects of the Odium and went to fight Phil Coulson and Daisy Johnson. The serum gave Tye enough force and durability to withstand several I.C.E.R. shots and harm Coulson. However, Tye was ultimately defeated by Quake who stabbed him with his own knife.

Kasius-Mackenzie Duel
"I'm gonna beat your body with your little skull!"

- Kasius to Alphonso Mackenzie

After his men failed to stop the S.H.I.E.L.D. agents, Kasius decided to face them himself. He brought the Yo-Yo Rodriguez he had captured to the Crater, where he met Alphonso Mackenzie. Kasius drank the Odium and slit Rodriguez's throat before jumping in rage in the Crater to fight Mackenzie. Thanks to the Odium, Kasius was able to severely beat up Mackenzie while easily withstanding his assaults. However, Jemma Simmons intervened and injected an ear implant in Kasius, distracting him long enough so that Mackenzie could stab him with his Shotgun-Axe.

Capabilities
The Odium turned its user into a state of intense and uncontrollable rage, fearing neither pain nor death. The Odium colors the eyes of the subject in black and black liquid sprouts from the mouth and the eyes of its user. It also provides them with a number of superhuman abilities.
 * Superhuman Strength: After drinking the Odium, the subject shows some degree of superhuman strength. While Kasius, who is supposed to already have more strength than a Human due to his Kree physiology, was under the Odium's influence, he violently beat up Alphonso Mackenzie and threw him several meters high against a wall. Tye, a regular Human, was able to fight Phil Coulson and Daisy Johnson after drinking the Odium.
 * Superhuman Durability: The Odium grants superhuman durability to its user, as Tye remained unaffected by several I.C.E.R. shots and Kasius was barely affected when Mackenzie shot at him with his powerful Shotgun-Axe.
 * Pain Suppression: After drinking the Odium, the subject does not feel pain anymore, enabling him to fight with rage until his death.