If you could go back two years in your life, and you could remember everything, what would you change? When Marco Diaz wakes up in his old bedroom, with memories of events that haven't come to pass, he finds out that some things should stay the same. And that some things will change on their own. Rated M for language, violent scenes, and some spicy stuff.

After a chance encounter that leaves him wanting more out of life, Marco soon gets his wish granted when a certain blonde princess comes to Earth with her entire kingdom in tow. But things are not as they seem, and while the forces of darkness, fear, and evil seek to destroy, Marco and his new best friend look to make things right, between both of their worlds.

[Commissioned by Dunkstar34] Marco and his girlfriend, Meteroa Butterfly entertain the Diaz's new houseguest, in more ways then one

Throughout the multiverse, it's fate for Star and Marco to meet regardless of circumstance. In this AU however, a young Eclipsa befriends Marco, changing not only the story of their adventures, but the threats that befall Mewni. Cover Image from Butterfly Divergence at Tumblr

What happens after "Hi" and "Hey."

Tired of countless failures, Ludo comes up with a new scheme to steal Star's wand: Make her deliver it to him personally. Even if he has to make her do it himself. Based on the Plankton! episode from SpongeBob Squarepants.

Marco, un chico de preparatoria, bueno en karate, con falta de habilidades sociales, Hekapoo, forjadora de las tijeras dimensionales, mundos diametralmente opuestos, y un primer encuentro poco amistoso, receta para el caos, excepto que 16 años cambian a cualquiera, ¿triunfará su amor aún cuando un nuevo y terrible mal oculto por generaciones se libere y ataque a todo el multiverso?

Needing money for concert tickets, the cheerleaders of Echo Creek Academy offer to babysit Mariposa while Star and Marco are on Mewni. What they didn't count on was a certain demon baby whisking her friend away for some interdimensional fun and leading them on a chase throughout the Multiverse! (ON BREAK)

Star and her friends have been abducted by Ms. Heinous, who has a new way of making Proper Princess of all of them, involving filling up their bellies with food and their minds with brainwashing. Now Marco must save them before they’re completely turned into Mind Controlled Bountiful Proper Princesses.

In a last-ditch effort to survive Hekapoo used the last of the magic, to be reborn sort of speak, now sharing a body with Jackie Lynn Thomas the two must work together to get the one thing they desire, Marco Diaz

Marco has been feeling that his relationship with Jackie was feeling stale, so he does what most boys would do: have a fling with a stranger at a party, but what would happen when that fling becomes your new roommate and something more.

AU where Star is a human and 3 years younger than Marco.

AU that takes place after the season one finale. Star and Marco are faced with threats far more fierce than those that they're used to. With danger seeming to be around every corner, they have to rely on each other if they are going to survive. Plenty of Starco fluff. Plenty of unique challenges and experiences. I ask that you read until chapter four before giving up on the story.

Moon and River's firstborn daughter was seen as both a failure and a danger, so she was replaced by Star as the heir. This daughter, from whom no one expects much, turns out to be the only one capable of achieving unthinkable things... among them making the immortal monster fall in love. (Warning: Lemons, violence and strong language).

"So, I got a question for ya. Do you wanna have a bad time?" An AU story based on the Sans battle from Undertale.

Star and Marco realise they like each other and end up fooling around during a detention period. However, They will soon find that their actions have unintended consequences.

This will be a retelling of the Star Vs The Forces of Evil story, with Marco as the main viewpoint character. I will be maintaining most events as they happened originally in the show, with a few changes to better fit an M rating (mostly teens being actual teens rather than Disney teens). Pm me for a discord link!

She beat Toffee, she ended the war, she became Moon the Undaunted...so why doesn't she feel like her?

While having a sleepover with the girls, Marco is forced to admit an embarrassing memory from his time in the Neverzone.

Star and Marco in their later teenage years have drifted apart. Star now in the embrace of Oskar has embraced a more abrasive, edgier life style that leaves Marco worried if his best friend has been forever corrupted. In this story Marco and Star's friendship reach its breaking point as Marco has to save Star from herself.

Four years after Weirdmageddon, Dipper and Mabel Pines have come to Echo Creek to investigate and document Princess Star Butterfly and her magical struggles against the Forces of Evil. A comic book shop confrontation, an abandoned mansion, and the tangled strings of fate set the stage for an adventure beyond what even Gravity Falls prepared them for. Multi X-Over

Many hopes have risen after the destruction of all the magic in the universe, however what was lost can be found, Star and Marco soon find themselves with a new task that would decide the fate of their new world.

There were many people Marco or Star could've fallen in love with. Let's have a look at some of them. Various one-shots about how some ships could've played out.

Star may have done Mewni proud with her recent ventures, but the heart of Moon's daughter is still not at ease. Torn between the world she calls home and the world she loves, Star wonders where her place truly is in the universe. Yet when a vengeful dark god attempts to destroy the Nine Realms, Star must fight for all worlds, not just her own.

DIRECT SEQUEL TO "DARK TIMES" READ IT BEFORE YOU READ THIS! After the battle of the Butterfly Castle, only Star is left to pick up the pieces.