Star Vs. The Forces of Evil AU. Marco Diaz doesn't consider himself special whatsoever. Sure, he has a tail, the ability to control different colored flames, and he can turn into a near indestructible monster. He is also the unwilling enforcer of a Pseudo-God. Taking all of that into consideration, he does not see himself as someone special whatsoever. Fate would like to disagree.

Older Yugo AU! The story goes that Yugo The Eliatrope is reborn and given to Alibert. This isn't the case. No, Yugo is born far earlier than expected and is raised alongside Goultard. Being an Eliatrope, Yugo is given long life and still appears as teenager. After a brutal fight that leaves him amnesiac. Yugo's journey to rediscover his past begins. Spoilers for season 3.

Having lived on Mewni for a while, Marco Diaz, isn't loving it as much as he thought he would. He would even go as far as to say he was a burden to Star and those around him. Should he return? Then when he was thinking that, he was suddenly kidnapped by the Dark version of Star who has been eying him for a while.