Mauricio is very energetic, he loves playing football (soccer) and video games with Josefina and Santiago. He likes colorful clothes (mostly yellow, orange and purple), sleepovers and sports in general. He owns an old PlayStation and also plays computer games.

He is Santiago's best friend and Josefina's boyfriend, many times he has to be a mediator between them, he tries to deescalate their fights by suggesting fun things to do together and talking normally to both of them. He was very excited when Santiago and Josefina started to get along better, even if he couldn’t completely understand why.

He believes this happened because they both have an interest for paranormal things. Unlike them, he can't see the weird creatures prowling the city of Montevideo, so when they start talking about those shadows, Noir, and the magic glasses he assumed they were just playing an eerie roleplay game, and starts to play along pretending to see them too.

The three of them start to investigate about these things, going around the city, looking for any information on the internet and asking people if they have had any similar experiences. As the time passes, he takes the situation more seriously and starts believing a little more. When hearing that Santiago first saw these things after starting to use his glasses, Mauricio suggest that they should go ask the oculist who made them directly.