Eddie Jackson was the overbearing clown obsessed separated husband of Sheila and father of Karen. Though his marriage was already in trouble, he split with Sheila before work one day when he found Karen under the table, giving Ian Gallagher oral sex. Ian and his brother Lip quickly escaped the house but Eddie later showed his anger by attacking their father and telling him to pass the message along.
Eddie appears to be quite religious, which causes his break-down when he learns of Karen's true sexual nature. After being forced out of his own home, he moves into the basement, but when Frank moves himself in, Eddie is forced to go elsewhere. Hell bent on revenge after being shown up at a religious parent and child meeting, Karen has sex with Frank and films it as well as posting various other hate filled blogs directed at him. Feeling as though he has failed as a man, Eddie throws himself into frozen water while tied to a cement block. Sheila was left to think he was just missing and spent most of her time looking for him. When his body is found, Frank is questioned, but later released only to find out his attempts to get Eddie's life insurance had failed as the money had been given to Karen.