Billy confronts Mandy, and gets tossed. He and Grim then make a run for it. They run into the bar and encourage everybody there to create a diversion.

Mandy now has the entire world covered with her troops, but Billy doesn't give up. He and Grim re-enter the factory, where Billy uses a special device to shut the power down. This unfortunately leads to the group splitting up, giving Mandy a chance to take a few of them.

Fred makes his way to the surface to confront Mandy. He would soon meet his fate with the Underworld.

Mandy creates a demon using Irwin's soul after she killed him. This demon is sent to kill Billy.

Billy discovers a bounty hunter who is holding a big secret. Kyle gets sent to the electric chair for running away and develops a new ego. What is this big secret that Mandy is trying to take from the Resistance?

While the Resistance figure out how to stop Mandy, Billy is taking a break in a swimming pool. However, it doesn't sit well for everybody else.

TGR: The Grim Resistance - This is the story of a post-apocalyptic Endsville 5 years after the world's ruler, Mandy, took over. Billy created a Resistance band consisting of all the survivors. This is only the beginning of a long journey to freedom! Rated M for Mature Language

A followup on "The Secret Snake Club." Irwin is released from jail and meets up with a certain macrame club member. A CarolxIrwin oneshot. Request fic.

In this story, Mandy decides to give a very special Halloween treat to someone who helped her on her first Halloween.

Only the journal entries can show the true killer. Billy, Irwin, Mindy, Nergal. . . . . Oh, who could it be if its even one of them.

Billy is quite the energetic one.

Billy and his dad are up late at night watching TV.

After facing down the aSTRoVaMPiReS, Underfist learns of an all-new threat seeking to take over the world–and this new threat is led by Velma Green! Will Underfist be able to stop the Spider Queen? Will Fred Fredburger eat nachos and frozen yogurt? Will there be cobwebs everywhere? Find out the answers to these questions and more in Underfist: Return of the Spider Queen!

An extended ending to "The Greatest Love Story Ever Told." In which Nergal Jr. apologizes to a certain girl.

The long-awaited sequel to Underfist: Halloween Bash...is never coming out. Why? Because Cartoon Network didn't renew Maxwell Atoms's contract a decade ago. Instead, there's this: a fanfiction attempting to continue the story of Underfist. Join Irwin, Fred, Hoss, Jeff, and Skarr as they take on their biggest challenge yet: the aSTRoVaMPiReS!

Mandy is annoyed with Irwin constantly trying to score a date with her. So, she convinces Billy to be in a fake relationship with her to get Irwin off her back, but will it work? And is there something more to this? Rated M for Safety. Billy X Mandy

Mandy's archenemy Mindy is at it again, and this time she makes a dare with Mandy like no other before. Now, Mandy has to find a boyfriend in a week before Mindy does, otherwise she'll have to be the read headed girl's slave. Little does Mandy know, what comes out of it is an experience that will change her life forever. BillyXMandy. T now for language, M later for lemons.

Billy and Mandy never liked each other but, they also never, didn't like each other.

The story of how Mandy learns how to smile without ending the world.

someone is depressed - future fic

In this scenario, Billy grabs his things to spend the night at Mandy's. As she's waiting for him on her front porch, a local assassin is ready to change the plans. Rated M due to how Mandy dies.

In this short oneshot, Billy & Mandy encounter a hellhound during their nightly walk. What happens next? Read to find out! Rated M due to some graphic scenes.

Based off the fanfic 'Flapjack and His Random Adventure.' Billy, Mandy, and Grim have a great time on a wonderful weekend day. But things go crazy when they go doing random things. Rated T for swearing, nudity, and of course randomness.

A trip to the Underworld Forest leads to unexpected feelings. A GrimxVelma oneshot.

After Mandy is put on house arrest, Grim becomes a torch singer. A parody of "Mind Over Murder." Rated T for suggestiveness throughout and one bad word. Also for a middle finger. Sorry if you get offended. Also, if anyone is confused, they are teens in this.