When Leslie discovers her daughter, Didi, has an imaginary friend, she enlists the help of Gary to hunt him down and destroy him. This time, it's personal.

After thirty years on the job as a demon hunter, Gary is looking forward to retirement. But when his boss reveals they still haven't found a new chosen one, Gary tries to take matters into his own hands.

Despite his moral objections, Gary is assigned to guard a famous demon porn star who's received a death threat. But as he gets to know the demon, Gary finds himself questioning his previous assumptions and prejudices.

Gary tries to help his usually uptight boss Leslie confront her issues, unknowingly unleashing her inner demons.

A case concerning a possessed teen leads Gary and Hanley to suspect that a heavy metal band's music is to blame - only to discover that the rockers are not what they seem.

Leslie, Gary and Tucker take a day trip to visit a billionaire on his Superyacht to secure an investment for the Ministry. Things go perfectly fine.... until they don't.

When Gary spends a day with his niece, he realizes his demon hunting skills are no match for the terrors that can be inflicted by a teenage girl.

When Gary and Hanley head to an island resort to hunt down a demon, Gary is determined to turn it into a vacation despite the fact that trouble lurks everywhere - even in paradise.

Gary forms a bond with a tiger after it saves him from a demon but when the tiger starts exhibiting demonic behavior, Gary is faced with a difficult choice.

When Steve's wife throws him out, he ends up staying with Gary and they try to build the fraternal relationship they never had. However, it doesn't take long for old sibling rivalries to rear their ugly head.

The anniversary of his fiancee's death has Gary more down in the dumps than usual, but a chance encounter with a friend may be just what the doctor ordered...or not.

Gary is public enemy number one when Tucker goes missing. He must work to undo a selfish mistake while facing his most twisted of enemies: Tucker Fans. Mudge returns only to prove they're more useless than even previously thought.

Just when Gary thinks the Ministry can't get any worse, he discovers they're allowing his nemesis to regenrate. Gary is accidentally impregnanted with it's egg when he tries to destroy him and is forced to birth his demon offspring.

Gary and Hanley must battle with the new mirror monster Grundleman, which dredges up some disturbing memories from Hanley's past.

Gary goes home and must confront a horror unlike any other - a family dinner with his parents and annoyingly perfect brother Steve.

Gary and Leslie head to Japan for the annual gathering of the world's demon hunters, but Gary is in for the surprise of his life when he realizes all his old cohorts have retired - replaced by bright eyed and bushy tailed teenagers.

At a restaurant to celebrate his birthday, Gary thinks his teenage waiter could be the new chosen one. Nobody buys it, but Gary is determined to prove this kid is his replacement so he can finally retire.

Intent on destorying all of human kind, the Prophetess Vale takes one last stab at leading the Demon Revolution. Executing a plan to free the Evil Book from the Ministry's vaults won't be easy, however, considering her last remaining minion is Larry; her human sex toy.

Gary is finally enjoying his long overdue retirement when he hears his nemesis Fleshler has returned. He makes his way back to the ministry only to find that everything has changed in his absence - or has it?

With Tucker in a coma and demon activity on the rise, Gary's job is harder than ever. With funding at all time low and danger at an all time high, the Ministry hires an intern, Mudge, who is of no help at all.

Fed up with his life and job, Gary moves to the forest where he befriends a group of fed up demons also looking to escape the daily grind. Leslie and Hanley are forced to go after him when the Ministry begins to fall apart in his absense.

The prophecy is finally fulfilled; an ancient demon rises and the Demon Revolution begins. The Ministry struggles to save humanity from the powerful Ryndok, and Gary learns something new about his body.

When teenagers start overdosing on a new demon-derived drug, Gary goes undercover at a high school to find the culprit.

In an attempt to get his baby nemesis out of his life and the Ministry for good, Gary puts him up for adoption.

When Gary finds out that a demon named Fleshler might still be alive - despite Gary killing him years ago - he recounts to Hanley the story behind the death of his true love, Janine.