Marco es un joven cazademonios y descendiente de Sparda, que es contrato por los Reyes Butterfly para ser el guardián de la princesa Star para protegerla de unos grotescos monstruos que aterran Mewni. Sin embargo empieza a ver que las cosas son más turvias de lo que pensaba y con misterios en el aire. - Crossover con Devil May Cry.

Pasaron 14 años desde que la magia fue destruida, y la pequeña Cressida Butterfly(hija de Star) esta a unos días de cumplir 15, pero por varias circunstancias ella revive a la magia y con esto a Glosarick, ella ahora esta decidida a descubrir quien es su padre, del cual no sabe nada, esto la llevara a recorrer diferentes mundos en su búsqueda

Marco Diaz vanished one day after a traumatic moment occurred in his life. His family worried for years but out of nowhere he returns but with a passenger a girl from a royal family. See how Marco returns home changed and scarred from his time enslaved. And witness how he must fight monsters of a old Legion with the aid of Star Butterfly.

"I love you." Were the last words she had ever said after running away from him. These words and her disappearance left him heartbroken. Saddened by the emptiness of his heart, his life deteriorates. Little does he know a certain forger will give him a chance to turn back time.

U.A. Despues del incidente Bon Bon, una serie de acontecimientos despertaron un antiguo y oscuro poder, el cual Marco carga sobre sus hombros, llevándolo a ganarse el título de Guardián. Ahora, estos eventos lo acercaron cada vez más a Star, hasta un punto que nunca antes se había imaginado. Sin embargo, una nueva amenaza acecha al reino de Mewni desde lo desconocido...

What if Star was never a Mewman, instead just your typical high school teenage girl? How would her love and friendship with her best friend Marco Diaz play out?

DrabbleAU.-Le encantaba observar a su mesera personal ¿y por qué no? incomodarla en el proceso.

AU: It all started the day Moon's mother was assassinated. Now, the burdens of the royal crown have been passed on to her but it all proves too much to bear. Whisked away from her own dimension, she crashes in another where she will make new friends and foes alike. What problems await her, the Butterfly family, and those she meets? 'Seeing is believing...'

A young Star gives her mother a slightly unusual birthday wish. (One shot. Originally created for a 24 hour writing challenge with the theme of "food".)

Star Butterfly es la nueva vecina del chico malo de Echo Creek, Marco Díaz, ambos son muy distintos en todo sentido ella es educada, amable e inteligente en cambio él es propenso a meterse en el problemas, rebelde, molesto e incluso algo desagradable que en un principio su relacion comienza con el pie izquierdo pero lentamente su relacion ira evolucionando hacia algo más.

Star and Marco take a much needed holiday in Japan. Things take a turn similar to certain "works" from said country.

Since I couldn’t wait until october for this, this is my own early halloween challenge. (I made this challenge last month.) The rest of the description and details are inside.

contiene una pequeña escena de lemon. Marco es un hombre de 29 años que vive solo con sus dos hijas, ellas quieren saber sobre sus marcas de nacimiento, sus orígenes y mas importante quien es su madre

When the only thing separating the universe from total annihilation is a mysterious being that rivals even the strongest of creatures. Can star and Marco save the multiverse from imminent destruction? contains Starco OC's lots and lots of misleading

Not gonna lie, this story will make you want to gouge your eyes out from how bad it is. But if for some reason you're still interested let me explain quickly. This story is every episode of Star VS rewritten and """"improved"""" by me. Has some swear words, violence, and sexual jokes, don't click if you're easily offended.

Marco was curious about Mewni, and Star's magic wand. How the wand becomes the Butterfly's family heirloom? Discovering her best friend's curiosity, Star took Marco to the Grandma room, and told him about the histories and stories of the queens and the wand. The OC queens were made by jgss0109 in deviantart. (Alternate queens, in later chapters, by Trail-Grazer in deviantart also)

Una serie de one-shots, drabbles e historias AU de mi futuro fic "Star vs. las Fuerzas del Mal: La Guerra Mística". Hace crossover con "Miraculous Spider-Man" y su serie de one-shots, así como otras series, tal como se verá en los primeros capítulos.

If you had to give up someone to save them, would you do it? It didn't take Marco long to answer the question.

If you thought only girls could go through Mewbery, you were mistaken. What most people don’t know was that Jushtin the Uncalculated went through Mewberty and it was not pretty (Cover image by yours truly)

Marco Diaz is a normal boy who lives in Echo creek,a normal and calm city from the planet Earth...but what happens when the safe kid ends up falling straight into a new adventure that will change everything he knows? Warning: This story contains Princesses, Glitter and action. Slight AU. Rated T for now.

After gambling and drinking a beverage at a casino on Mewni, Star and StarFan13 (Daron) end up going on a mini-quest through parts of Mewni while under the influence and some affectionate love blossoms between the two. Becomes a StarxStarfan13/Daron pairing as a result. Rated T for strong use of an alcoholic beverage.

Star and Marco celebrates Rosalie's deathday.

This fan fiction is based on Disney’s Star vs. the Forces of Evil! This story takes place years after the series finale, “Cleaved” Star and Marco have grown up so much! And gotten married! There’s no more magic though... right? There’s still plenty of other problems that they get into, but there’s nothing stopping this power couple!

After conquering Heckapoo's challenge, Marco thought he was prepared for anything. He just didn't realize how difficult adjusting to life back on Earth would be.

Marco and Angie share a... different sort of relationship than most families do.