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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 - Published: 5/27 - 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: 1 - Favs: 1 - Follows: 1 - Published: 6/8 - 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 - [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 - Updated: 4/23 - Published: 4/13 - 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: 2 - Follows: 1 - Published: 3/18 - 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: 3 - Follows: 3 - Published: 2/2 - [Billy, Mandy] Boogey Man, Irwin
Journal Entry 99 by Emrood reviews
But no matter how hard I try, work, or plan, I will never be able to own an ounce of the happiness Billy contains in his soul. It is self administered. Personal. And illusive. And so, if I cannot own happiness, I will have the next best thing. [Complete]
Rated: K+ - English - Friendship/Spiritual - Chapters: 1 - Words: 2,222 - Reviews: 2 - Favs: 3 - Published: 1/22
Rock-a-Bye Pinhead by JrNitro24
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 - Favs: 1 - Follows: 1 - 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: 3 - 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: 3 - Favs: 14 - Follows: 13 - Published: 3/15/2018
Stupidity got us into this mess, but it will never get us out by PixieVenus reviews
Billy and Mandy never liked each other but, they also never, didn't like each other.
Rated: K - English - Friendship - Chapters: 1 - Words: 843 - Reviews: 2 - Favs: 22 - Follows: 8 - Published: 3/1/2018 - [Billy, Mandy] Grim - Complete
Grim Adventure of Billy and Mandy: Tough Love by King Of Nipples reviews
The story of how Mandy learns how to smile without ending the world.
Rated: T - English - Romance/Friendship - Chapters: 1 - Words: 1,061 - Reviews: 3 - Published: 2/6/2018 - Mandy, Grim, Billy, Irwin
Unwanted Company by KenNan73888
Chael and his childhood maiden friend, Belle, visit his father castle. Not long, friends from different dimension comes along as well, to visit the castle and them. [MultiCrossover]
Rated: K+ - English - Humor/Friendship - Chapters: 1 - Words: 1,508 - Published: 1/27/2018 - OC - Complete
Unforgotten Event by KenNan73888
One day, Billy and Mandy was fighting for Grim scythe when all of a suddenly, they were put under a curse. The curse cannot be undone, to what Grim had putted. The scythe been going crazy since Grim execution day. The day of that incident...
Rated: K+ - English - Supernatural/Friendship - Chapters: 1 - Words: 1,923 - Published: 1/27/2018 - Mandy, Grim, Billy - Complete
Depression by tayrulez
someone is depressed - future fic
Rated: T - English - Chapters: 1 - Words: 908 - Favs: 1 - Published: 12/31/2017 - Mandy, Nergal Jr. - Complete
Billy and Mandy's Random Adventure by FunnyTina677 reviews
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.
Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 691 - Reviews: 1 - Favs: 2 - Published: 11/8/2017 - Complete
Web of Love by MasterMind13 reviews
A trip to the Underworld Forest leads to unexpected feelings. A GrimxVelma oneshot.
Rated: K - English - Romance/Hurt/Comfort - Chapters: 1 - Words: 2,576 - Reviews: 1 - Favs: 4 - Follows: 1 - Published: 10/31/2017 - Complete
Mind Over The Reaper by FunnyTina677 reviews
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.
Rated: T - English - Parody - Chapters: 1 - Words: 953 - Reviews: 1 - Published: 10/26/2017 - Mandy, Grim - 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: 4,800 - Reviews: 2 - Favs: 6 - Follows: 3 - Updated: 8/30/2017 - Published: 7/31/2015
Life In The Grim Adventures Of Billy And Mandy by Warrior of Wrath reviews
So I died and now I'm a cartoon I have very little knowledge of. Add to that I'm a child and im being raised as the next heir to my father's legacy! What kind of weird situation am I in! Oh well ill just roll with it for now until I'm old enough to leave and live on my own, for ill interact with kids my age I guess. Hey, those two look decent enough! "HEY LETS BE FRIENDS!"
Rated: T - English - Supernatural/Adventure - Chapters: 8 - Words: 23,142 - Reviews: 19 - Favs: 41 - Follows: 30 - Updated: 8/24/2017 - Published: 7/8/2017 - Mandy, Grim, Billy, OC
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