Mariana is a very playful, emotional character with a dirty sense of humor. He can be easily irritated but even so he's very caring for the people he loves, like JuanaFlippa and Slime, even when they annoy him. He shows his emotions very openly, like crying or swearing a lot when he's upset. He likes to jokingly flirt with his friends often, though he also avoids doing so at times because it upsets Slime.