Guilt is a creation of the Sheeda, the exact nature or origin of which is unknown. It is tasked with destroying the minds of those it is set upon with guilt and shame.
Guilt was created by Grant Morrison and Simone Bianchi. It made its first appearance in Seven Soldiers: Shining Knight #2.
Major Story Arcs
Seven Soldiers of Victory
Guilt is set on Sir Ystin in modern-day Los Angeles. It dogs the knight's steps, telling him of the death and corruption of Camelot, and of how Ystin failed those he loved. It tries to convince the knight that all is lost, and suicide is the only way to absolve him of his failures. It takes control of a street hooligan and spurs him and his friends to torment Ystin further. This gives Ystin the push he needs to overcome Guilt, however, and Guilt dissipates as Ystin vows to uphold the glory of Camelot.
Powers and Abilities
Guilt is invisible to all but those it stalks, and is intangible and impossible to destroy by physical means. It is able to uncover an individual's deepest guilt and shame, and to manipulate this to control and destroy the person, typically by driving them to suicide.