Introduced in the first novel, Dead Until Dark, Jason is Sookie Stackhouse's older brother and a road crew supervisor for Bon Temps, Louisiana.

Initially portrayed to be callow and selfish, Jason's character changes as the series progresses and he begins to mature and become more supportive of Sookie and her supernatural issues.

Jason blackmails Andy to join the police force, becomes attracted to Crystal, and helps tip off the Hotshot residents about a drug raid.

Not wanting to be reminded of the painful memories of Sookie's house, Jason sold it to an unknown company, later determined to be owned by Eric Northman.

To this end, they bite him numerous times in werepanther form, feed him Viagra, and proceed to have the women of Hotshot (including Crystal) rape him while he suffers from fever.

Crystal appears afterwards, gleeful over Felton's death, and wishes for Jason to return to Hotshot to resume his role as a "ghost daddy."

The next day, he looks for Sookie to tell her the good news about his non-turning, but she is concerned about Eric, who has been bound by silver chains to prevent him from walking out into the sun (due to a dangerous witch spell by a newly resurrected Antonia).

Jason responds to the call with Andy but cannot make much headway with Lafayette until Jesus comes and eventually puts the grieving mother spirit at peace.

Jason helps Sookie's cause to rescue Tara and other humans from Moon Goddess Emporium, which Bill plans to destroy to end the war with Antonia.

Soon the prisoners are broken free temporarily when the spell is lifted, and Tara and Holly run out to the embracing arms of Sookie and Lafayette.

When Pam, Jessica, Eric, and Bill come armed to defeat Marnie, they are unable to make any progress because of the barrier.

Marnie asks Eric and Bill to sacrifice themselves for Sookie's release, and while they both agree, Pam does not and launches a rocket launcher at the barrier, causing a massive explosion and injuring Jason severely.

That night he, Andy, and Judge Clemens take a trip to a Fairy nightclub and there Jason meets his cousin Hadley, who believes Sookie is dead after disappearing at the end of Season 3.

Jason stops him in the police cruiser to try and prevent him from leaving Bon Temps, but he knows that Hoyt is happier this way and reluctantly lets him go.

Jason and Sookie dig closer to the truth regarding to their parents' murderer, and they learn that there is a war coming between the vampires and the fairies.

As the group takes refuge at a beach, Nora believes that Jason knows more about Lillith and Warlow, and glamours him into getting more information.

He gets picked up by a mysterious driver, and Jason eventually begins to calm down after realizing the hallucinations of his parents are causing him to act crazy.

When the driver possibly reveals himself as Warlow, Jason attempts to shoot him, but the stranger disappears and later uses light to stop the car before it crashes.

When Jason returns home that night, he finds Sarah Newlin waiting for him outside, where she confesses that she has loved him ever since they met at the Fellowship of the Sun.

To torment Jason, Sarah takes him to see the fornication room, where Jessica and another vampire named James are supposed to have sex for research.

Sarah later throws Jason into Gen Pop now that the governor cannot protect him, but not before having his arm bled, making him vulnerable to the women vampires.

Jason then realizes that Sarah is still on the loose, so he chases her down and almost kills her, but eventually lets her go free because he doesn't want more blood on his hands.

Bill enlists Jason and Violet to ask for Andy and Adilyn's help to save Sookie from becoming Warlow's vampire/fairy wife.

In a tense scene in the car, Sam wants to ambush Fangtasia head on but Jason threatens him with a gun and orders him to turn around.

A crew is assembled to assault Fangtasia, which includes Sookie, Bill, Jason, Eric, Pam, Jessica, Violet, and 2 others.

Sookie and Eric create a diversion in the front while the rest of them sneak in, but before much can be done, Vince's posse attacks with Molotov cocktails.

At one point in the night, Jessica runs up to Jason and begs her to dis-invite her boyfriend James because he found him cheating on her with Lafayette in their car.

Bridget apologizes but is interrupted by Jason, who has received multiple picture messages of Adilyn, Wade, and Jessica from Violet, who has them all tied up and gagged.

Only minutes after he steps inside the house, he is abducted by an angry Violet, who puts him in a room where Wade, Adilyn, and Jessica are being held prisoners.

Almost 4 years later, after Sookie agreed to stake Bill, leaving her heartbroken, New Blood has been released to the market, and the Hep V epidemic has ended.