Grim Adventures of Billy & Mandy Crossovers
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Worlds High by spongygirl19
Worlds Highschool is a highschool placed between Heavan and Hell. A place for teenagers and adults to harness their magical abilities. But to the outside world, it's your regular highschool. Random ideas and oneshots. (Please review and fave!)
Crossover - Powerpuff Girls & Grim Adventures of Billy & Mandy - Rated: T - English - Romance/Humor - Chapters: 2 - Words: 1,949 - Published: 5/22
Big Boogey Adventure by PerkyGoth14 reviews
When the Boogey Man causes Grim to lose his powers, rank, and title in the Underworld Court for misusing his powers, he plots to seek out Horror's Hand and take over the world. It's up to Billy, Mandy, Irwin, and Grim to get to Horror's Hand before the Boogeyman does along with the help of Mike, Cindy, and Mike's Nicktoons friends.
Crossover - Grim Adventures of Billy & Mandy & Rugrats/All Grown Up! - Rated: K+ - English - Horror/Adventure - Chapters: 8 - Words: 17,417 - Reviews: 1 - Favs: 7 - Follows: 3 - Updated: 5/13 - Published: 5/4 - Lil D., Grim, Boogey Man, OC
Grim and Edboys Season 1 by Kelothan
My remake of The Grim EDventures of Ed, Edd, n' Eddy. Warning: contains many lines copied word for word. Another warning, contains many divergences from the original storyline. Now with voice actors!
Crossover - Ed, Edd n Eddy & Grim Adventures of Billy & Mandy - Rated: K+ - English - Humor/Supernatural - Chapters: 30 - Words: 83,279 - Favs: 4 - Follows: 5 - Updated: 2/11 - Published: 12/9/2016 - Eds, Grim - Complete
Endsville Falls by PupCakes reviews
Billy and Dipper find out that they are switching schools as exchange students for their first year of high school! What will happen to Dipper in Endville as he meets Grim and Mandy, while Mabel meets Billy? Watch as Dipper uncovers the mysteries of another town that seems to attract the paranormal!
Crossover - Grim Adventures of Billy & Mandy & Gravity Falls - Rated: T - English - Mystery/Adventure - Chapters: 2 - Words: 1,252 - Reviews: 2 - Favs: 8 - Follows: 7 - Updated: 2/1 - Published: 10/9/2016 - Mandy, Billy, Dipper P., Mabel P.
Mandy and Kaa: Spellbind by TMan5636 reviews
Billy gets lost in the jungle and Mandy has to find him. What could go wrong? Rated T to be safe. Updated every Monday.
Crossover - Jungle Book & Grim Adventures of Billy & Mandy - Rated: T - English - Suspense - Chapters: 10 - Words: 10,917 - Reviews: 10 - Favs: 2 - Follows: 2 - Updated: 1/30 - Published: 12/4/2016
The Teenage Puffs meet Billy and Mandy by ainmals1 reviews
The teenagers meet two kids and a skeleton in a different town. Once they get to know them, Princess has made a few friends who don't like Billy, Mandy, and Grim. So The PowerPuffs and their new friends must team up to defeat their rivals.
Crossover - Powerpuff Girls & Grim Adventures of Billy & Mandy - Rated: K+ - English - Adventure - Chapters: 1 - Words: 1,634 - Reviews: 1 - Published: 1/19 - Complete
Tales from the CulDeSac by Kelothan
Sidestory FTW!
Crossover - Ed, Edd n Eddy & Grim Adventures of Billy & Mandy - Rated: K+ - English - Humor/Supernatural - Chapters: 3 - Words: 3,386 - Updated: 1/3 - Published: 12/27/2016 - Eds
Billy and Mandy Save Christmas by PerkyGoth14
Mike, June, Dee Dee, Ed, Edd, and Eddy along with Phil, Lil, and Courtney join Grim, Billy, and Mandy to travel to the North Pole to prove that Santa Claus exists, only to discover that he has been bitten by a vampire which means that unless the Head Vampire is killed, there won't be a Christmas this year.
Crossover - Cartoon X-overs & Grim Adventures of Billy & Mandy - Rated: K+ - English - Adventure/Friendship - Chapters: 10 - Words: 10,447 - Favs: 4 - Follows: 1 - Published: 12/31/2016 - Complete
Grim Adventures: The Thousand-Year Door by TMan5636 reviews
When the Endsville kids accidentally cross dimensions, they're now trapped in the Mushroom Kingdom. With nowhere else to go, they choose to help a certain red clad plumber find the Crystal Stars and unlock the mysteries behind the Thousand-Year Door. Rated K for mild bad language and possibly violence.
Crossover - Mario & Grim Adventures of Billy & Mandy - Rated: K+ - English - Adventure/Humor - Chapters: 7 - Words: 12,833 - Reviews: 7 - Favs: 2 - Follows: 2 - Updated: 10/28/2016 - Published: 9/16/2016
The Grim Adventures of Camp Camp by PupCakes
What will happen to all of the campers of Camp Campbell, as they are introduced to two strange children who somehow have a connection with death himself? Not just that, there seems to be something foul at play, but who's behind it all?
Crossover - Grim Adventures of Billy & Mandy & Camp Camp - Rated: T - English - Mystery/Supernatural - Chapters: 5 - Words: 5,531 - Favs: 5 - Follows: 3 - Updated: 10/20/2016 - Published: 10/9/2016 - Mandy, Grim, Billy, Max
The Fangire Princess by wolfgodwarrior reviews
I do not own Billy & Mandy or Kamen Rider Kiva or the characters. They belong to their rightful owners. (Warning: There will be lemons.) Custom characterxMandyxHarem. Enjoy!
Crossover - Kamen Rider & Grim Adventures of Billy & Mandy - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 2,129 - Reviews: 1 - Favs: 3 - Follows: 3 - Published: 8/18/2016 - [OC, Mandy] Kivat-bat the 2nd, Grim
Wrath of the Spider Queen by PerkyGoth14 reviews
Cartoon Network School has an odd infestation of spiders and the others find out it is caused by the one known as Velma Green: The Spider Queen who is out for revenge against Billy and Mandy's 'best friend forever': The Grim Reaper.
Crossover - Cartoon X-overs & Grim Adventures of Billy & Mandy - Rated: T - English - Horror/Adventure - Chapters: 16 - Words: 18,959 - Reviews: 9 - Favs: 4 - Follows: 3 - Updated: 8/1/2016 - Published: 7/21/2016 - OC, Grim - Complete
Grim sees Final Destination by madger the badger
Grim is taken to see a re-screening of "Final Destination" and asks for a refund.
Crossover - Final Destination & Grim Adventures of Billy & Mandy - Rated: K+ - English - Humor/Horror - Chapters: 1 - Words: 200 - Favs: 1 - Published: 7/8/2016 - Nick, Mandy, Grim, Billy
Be A-Fred, Be Very A-Fred Digimon Frontier Style! by 1942 reviews
This is my FIRST ever crossover fanfic!
Crossover - Digimon & Grim Adventures of Billy & Mandy - Rated: K+ - English - Humor/Parody - Chapters: 1 - Words: 2,504 - Reviews: 1 - Published: 6/30/2016 - Lucemon, Mandy, Billy, Fred Fredburger - Complete
Deal with the Reaper by DannyFenton123 reviews
Becoming a half ghost was not the work of fate. Somebody merely interrupted the Grim Reaper in the middle of their reaping, but when Grim tries to set things right they find a much more appealing alternative.
Crossover - Danny Phantom & Grim Adventures of Billy & Mandy - Rated: T - English - Humor/Supernatural - Chapters: 4 - Words: 6,075 - Reviews: 4 - Favs: 31 - Follows: 32 - Updated: 5/23/2016 - Published: 5/13/2016 - Danny F., Mandy, Grim, Billy
Sword of the Underworld by Lord Maximus reviews
(One-shot based on Heaven's Star) Grim offers Numbuh 1 a way to save the Kids Next Door and the world from Mandy by giving him the power of ancient warriors who existed since the near beginning of time.
Crossover - Codename: Kids Next Door & Grim Adventures of Billy & Mandy - Rated: K+ - English - Adventure/Spiritual - Chapters: 1 - Words: 3,447 - Reviews: 3 - Favs: 13 - Follows: 9 - Published: 4/26/2016
Algo sombrío llega de esta manera by Tsukimira reviews
TRADUCCIÓN NO OFICIAL - CRÉDITOS A RUSKBYTE. Harry está a punto de comenzar su primer año en Hogwarts. Con él viene su cínica, algo no oficial (por no hablar empeñada en dominar el mundo) novia; Mandy. Y también esta llegando su mutuo mejor amigo (es decir: sirviente) la muerte personificada.
Crossover - Harry Potter & Grim Adventures of Billy & Mandy - Rated: T - Spanish - Humor/Parody - Chapters: 21 - Words: 69,702 - Reviews: 15 - Favs: 19 - Follows: 10 - Updated: 1/19/2016 - Published: 12/20/2015 - Complete
Return of Eris by PerkyGoth14 reviews
Hermione and Eris plot revenge against Mike, Lu, and Og for banishing and repulsing Eris back in Egypt. It is up to Mike, Lu, Og an their other friends to meet Eris and get even before they will be destroyed. Will they be able to accomplish such a disgusting feat that involves Discord the draconequus?
Crossover - Grim Adventures of Billy & Mandy & Mike, Lu & Og - Rated: T - English - Romance/Adventure - Chapters: 16 - Words: 19,935 - Reviews: 9 - Favs: 2 - Follows: 1 - Updated: 1/13/2016 - Published: 12/13/2015 - [Mindy, Mike M.] Hermione
My Soul To Reap by Bob the Flying Monkey reviews
"I like my men a little on the tragic side," she said. So Grim gets the brilliant idea to set Mandy up with Voldemort: "Neither of you have noses! You're perfect for each other." But what horror has Grim released upon the world? And more importantly, upon himself? UPDATE 9/2015: You responded. I'm continuing.
Crossover - Grim Adventures of Billy & Mandy & Harry Potter - Rated: T - English - Romance/Humor - Chapters: 3 - Words: 5,048 - Reviews: 11 - Favs: 25 - Follows: 30 - Updated: 9/21/2015 - Published: 7/23/2012 - Voldemort, Tom R. Jr., Mandy, Grim
Eviler than Thou by Akela Victoire reviews
When Timmy's had enough, he wishes for someone to teach Icky Vicky a lesson. Vicky finally meets her match in Timmy's cousin Amanda "Mandy" Maxwell, a girl several times more manipulative, intimidating and evil than she could ever hope to be…
Crossover - Fairly OddParents & Grim Adventures of Billy & Mandy - Rated: T - English - Drama/Humor - Chapters: 7 - Words: 12,740 - Reviews: 68 - Favs: 115 - Follows: 70 - Updated: 9/18/2015 - Published: 10/15/2012 - Vicki, Mandy - Complete
The Grim Adventures of Star and Marco by Story Nado reviews
What if the Grim Reaper met Star and Marco?
Crossover - Grim Adventures of Billy & Mandy & Star Vs. The Forces of Evil - Rated: K+ - English - Humor/Supernatural - Chapters: 1 - Words: 442 - Reviews: 1 - Favs: 1 - Follows: 2 - Published: 8/25/2015
Ghosts & Gilded Apples by rotgardens
The Kanker Sisters & the Ed Boys discover a body in the mud near the cabin they're staying in over spring break holiday. Confronted with the vengeful spirit of the deceased, they are forced to ally with Death Himself in order to solve the mystery behind her murder. But can teaming up with demons and meddling with supernatural forces really end well for the Peach Creek gang?
Crossover - Ed, Edd n Eddy & Grim Adventures of Billy & Mandy - Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 3,787 - Favs: 1 - Follows: 1 - Updated: 8/25/2015 - Published: 6/29/2015 - Eds, Kankers, Mandy, Grim
Until Our Last Breath by thewriterinsidemyhead reviews
Grim has always been close by, watching and waiting…
Crossover - Courage: The Cowardly Dog & Grim Adventures of Billy & Mandy - Rated: T - English - Chapters: 2 - Words: 1,648 - Reviews: 1 - Favs: 9 - Follows: 8 - Updated: 8/4/2015 - Published: 7/14/2015 - Eustace B., Muriel B., Courage, Grim
Idiot Magi Billy Magica by equach reviews
This is what you get when Billy bring a magical girl to a school dance. I do not own any of this and the following belongs to their respective owners.
Crossover - Grim Adventures of Billy & Mandy & Puella Magi Madoka Magica/魔法少女まどか★マギカ - Rated: K+ - English - Parody - Chapters: 3 - Words: 3,361 - Reviews: 2 - Favs: 2 - Follows: 1 - Updated: 7/16/2015 - Published: 7/11/2015 - Billy, Homura A. - Complete
Equestria's Unexpected Heroes by XxBokkunxX
The day three DJs hear of a robbery of a royal carriage thier lives completely change. They befriend a strang creature only to find out that he was part in a horrible plot to take over Equestria. But who would try and take over the peaceful place? And why?
Crossover - My Little Pony & Grim Adventures of Billy & Mandy - Rated: T - English - Mystery/Family - Chapters: 6 - Words: 9,397 - Updated: 7/7/2015 - Published: 6/23/2015
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