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for my friends by Mario bros fan4ever reviews
when Billy fights with Jeff he now has a choice go home or save his friends based on wrath of the spider queen
Rated: K - English - Friendship/Adventure - Chapters: 1 - Words: 64 - Reviews: 1 - Published: 6/25 - Billy - Complete
angry Luigi saves Christmas by Mario bros fan4ever reviews
when Santa turns into a vampire Billy and Mandy team up with angry Luigi and alem tuber to find the main vampire
Rated: K+ - English - Adventure/Humor - Chapters: 3 - Words: 722 - Reviews: 1 - Updated: 6/25 - Published: 6/11 - Billy, Grim, Mandy, OC
Tutor Mindy by Shaeril McBrown reviews
Mindy's mom hired a tutor to help her daughter study well.
Rated: T - English - Drama/Hurt/Comfort - Chapters: 2 - Words: 383 - Reviews: 2 - Updated: 5/23 - Published: 5/20 - Mindy - Complete
LJ and Zofia's Big Boogey Adventure by PerkyGoth14 reviews
Much to their strong dismay, LJ and Zofia have to go to the Underworld with Billy, Mandy, and Grim when the death reaping skeleton is sentenced to court for misusing his powers and the Boogeyman takes him to court. When Grim's powers are soon taken from them, they are told about Horror's Hand which can make one's fears come alive and Boogeyman intends on taking it for himself.
Rated: K+ - English - Horror/Adventure - Chapters: 8 - Words: 21,860 - Reviews: 4 - Favs: 7 - Follows: 5 - Updated: 4/1 - Published: 3/28 - Mandy, Grim, Boogey Man, OC - Complete
Back to the Past by pinkamena426 reviews
Billy and Mandy realize they have old versions of themselves from 1998 and go to visit them. Grim realizes that he's better off with the normal Billy and Mandy.
Rated: K+ - English - Humor - Chapters: 4 - Words: 830 - Reviews: 2 - Favs: 1 - Follows: 2 - Published: 3/27 - Mandy, Grim, Billy - Complete
Sonny by RitzyGreen
When Junior first came to the surface world, he stole the appearance of a young boy at winter camp. In doing so, he unknowingly tore that boy's family apart. OC centric
Rated: T - English - Angst/Horror - Chapters: 1 - Words: 4,194 - Favs: 1 - Published: 3/19 - Nergal Jr., OC - Complete
Make my hips big by Shaeril McBrown reviews
Mandy meets a goth girl named Mariella after getting wide hips.
Rated: T - English - Humor/Friendship - Chapters: 1 - Words: 265 - Reviews: 5 - Published: 2/16 - Mandy, OC - Complete
Underfist, The series by Princess Regia Al reviews
Ever wonder what happened to Underfist after the movie? Read to find out! PS. Cartoon Network, please renew Maxwell Atoms's contract and make this a TV show!
Rated: K+ - English - Adventure/Humor - Chapters: 6 - Words: 5,313 - Reviews: 2 - Favs: 5 - Follows: 3 - Updated: 1/16 - Published: 7/31/2015
Fundamentals of a relationship by ecwecwecw1 reviews
Billy and Mandy are in High School now. While some parts of there relationship has changed, the Fundamentals are still the same. BillyxMandy, one shot.
Rated: T - English - Humor/Romance - Chapters: 1 - Words: 4,519 - Reviews: 5 - Favs: 17 - Follows: 7 - Published: 12/8/2019 - [Billy, Mandy] Grim, Mindy - Complete
LJ and Zofia's Jacked Up Halloween by PerkyGoth14 reviews
LJ, Zofia, and their friends come to celebrate Halloween with Billy and Mandy. However, not all is well when Grim tells them the story about a prankster known as Jack O. Lantern who lived in ancient times, causing tricks for people. Due to Billy's stupidity, he comes back and takes Grim's scythe to make it Halloween night forever so he can conquer the world.
Rated: T - English - Supernatural/Horror - Chapters: 5 - Words: 16,059 - Reviews: 1 - Favs: 5 - Follows: 5 - Updated: 10/7/2019 - Published: 10/6/2019 - Mandy, Jack, Billy, OC - Complete
Dreams of Darkness by Treacle Parcheesi reviews
As they settle into married life, Nergal decides to reveal to Sis the story of how he grew up and how he came to be banished from the Underworld. In the meantime, the powers that be threaten their future ... a future Sis is keeping a secret for now.
Rated: K+ - English - Romance/Friendship - Chapters: 1 - Words: 2,648 - Reviews: 1 - Follows: 1 - Published: 9/14/2019
Underfist v Irwin Family Reunion by SteveAtwater
They've faced down an evil marshmallow bunny, squid attackers from the underworld, aSTRoVaMPiReS, and spiders. They've grown close...er. They're accepted as Earth's heroes...kind of. But now, Underfist faces its greatest challenge yet...the judicial system!
Rated: K+ - English - Humor/Supernatural - Chapters: 10 - Words: 12,538 - Updated: 6/14/2019 - Published: 5/27/2019 - Complete
All for You by Shaeril McBrown reviews
Mandy finds out that she has a voice of a angel.
Rated: T - English - Humor - Chapters: 1 - Words: 289 - Reviews: 2 - Favs: 1 - Follows: 1 - Published: 6/8/2019 - Mandy - Complete
La profecia by vikipaxa reviews
Puro Hueso esta involucrado en una extraña profecía que amenaza tanto el mundo de los mortales como al inframundo, el problema es que Mandy y su primer amor tienen que ver con esto. Por ello de la forma mas indiscreta intentaran encontrar a ese primer amor de la rubia para ver de que forma detienen todo, si es que pueden. (Aviso GrimxMandy)
Rated: T - Spanish - Angst/Romance - Chapters: 1 - Words: 4,003 - Reviews: 2 - Favs: 2 - Follows: 2 - Published: 6/2/2019 - [Grim, Mandy] Billy, OC
See Mandy Dance by Shaeril McBrown reviews
Grim found out that Mandy is dancing.
Rated: T - English - Humor/Romance - Chapters: 2 - Words: 561 - Reviews: 1 - Favs: 1 - Follows: 1 - Updated: 4/23/2019 - Published: 4/13/2019 - Grim, Mandy, Mindy - Complete
LJ and Zofia and the Wrath of the Spider Queen by PerkyGoth14 reviews
LJ and Zofia start going to school with Billy and Mandy, but luckily, their friends Dib, Gaz, Nergal Jr, Kimberly, Chrissy, and even Akito and Estelle will be going with them. It's not a very good first day of class though since there's a spider infestation, and it turns out that the school is going to be held for the Spider Queen for her revenge against the Grim Reaper.
Rated: K+ - English - Drama/Supernatural - Chapters: 6 - Words: 13,328 - Reviews: 1 - Favs: 3 - Follows: 2 - Published: 3/18/2019 - Mandy, Grim, Billy, OC - Complete
The Journey of Billy and Mandy by CillianChamp reviews
Billy and Mandy are teenagers when they accidentally got transport into the Underworld where they must find a way out before the Boogey Man and Nergel will take over Endsville.
Rated: K+ - English - Adventure/Horror - Chapters: 1 - Words: 693 - Reviews: 2 - Favs: 5 - Follows: 3 - Published: 2/2/2019 - [Billy, Mandy] Boogey Man, Irwin
Rock-a-Bye Pinhead by JrNitro24 reviews
Based on the SpongeBob episode "Rock-a-Bye Bi-Valve": Billy and Mandy are older now, and find an abandoned child. With no one to take care of him, Billy and Mandy decide to raise him as their own. But with Billy constantly working and never giving Mandy her break, tempers start flaring around the odd couple. This fanfiction is only BillyxMandy if you want it to be.
Rated: K+ - English - Parody/Humor - Chapters: 2 - Words: 1,867 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 11/8/2018 - [Billy, Mandy] - Complete
Tea for Two by MasterMind13 reviews
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.
Rated: K - English - Friendship/Romance - Chapters: 1 - Words: 896 - Reviews: 1 - Favs: 2 - Follows: 1 - Published: 10/16/2018 - Complete
Mandy's Halloween Treat by DyNaMoDave
In this story, Mandy decides to give a very special Halloween treat to someone who helped her on her first Halloween.
Rated: K - English - Chapters: 1 - Words: 2,031 - Favs: 2 - Follows: 1 - Published: 10/8/2018
I know who killed me by DarkHime213 reviews
Only the journal entries can show the true killer. Billy, Irwin, Mindy, Nergal. . . . . Oh, who could it be if its even one of them.
Rated: T - English - Mystery - Chapters: 4 - Words: 3,770 - Reviews: 1 - Favs: 1 - Updated: 9/6/2018 - Published: 8/23/2018 - Billy, Mindy, Nergal Jr., Irwin
Underfist: Return of the Spider Queen by SteveAtwater
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!
Rated: K+ - English - Humor/Adventure - Chapters: 10 - Words: 9,363 - Favs: 2 - Updated: 8/14/2018 - Published: 8/10/2018 - Complete
Do Over by MasterMind13 reviews
An extended ending to "The Greatest Love Story Ever Told." In which Nergal Jr. apologizes to a certain girl.
Rated: K - English - Hurt/Comfort/Romance - Chapters: 1 - Words: 819 - Reviews: 1 - Favs: 4 - Published: 6/10/2018 - Complete
Underfist Against the aSTRoVaMPiReS by SteveAtwater reviews
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!
Rated: K+ - English - Humor/Supernatural - Chapters: 10 - Words: 9,207 - Reviews: 3 - Favs: 3 - Updated: 5/16/2018 - Published: 4/19/2018 - Complete
It's only for a week by JasonMyersX reviews
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.
Rated: T - English - Humor/Romance - Chapters: 1 - Words: 3,079 - Reviews: 5 - Favs: 17 - Follows: 14 - Published: 3/15/2018
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