Moreno is based out of Madrid and specializes in juvenile voices, such as Ash Ketchum in the Pokémon series, Jason Earles on Hannah Montana and Studio DC, Chris Colfer on Glee, Sean Biggerstaff as Oliver Wood in the Harry Potter movies, Jay Baruchel in The Sorcerer's Apprentice, Sterling Knight on So Random, and Terry McGinnis on Batman Beyond. Other dub credits include Jesse Eisenberg in Batman v. Superman, Mandark on Dexter's Laboratory, the title character in Disney's Chicken Little.