From Bulbapedia, the community-driven Pokémon encyclopedia.
Emerald (Japanese: エメラルド) is the eleventh main character of the manga series Pokémon Special. His origin is unknown.
He recently appeared in the Battle Frontier, having been brought there by Latios and Latias. There he met Todd. After he bound and gagged Tucker and stole his Salamence, Emerald was about to be banned from the Frontier; until it was revealed that Emerald was becoming a media darling. Upon the risk of losing major publicity, the Frontier Brains and Scott eventually agreed to his challenge: he would defeat all of the 7 Brains within 7 days.
Emerald seems to have an issue with his own height, as he wears his hair tall, clothing with extra long sleeves, and platform shoes. Much of his clothing appears to be intended to make him look taller than he really is. Even despite this, Emerald is much shorter than he already appears, as revealed by Greta and Todd while he is sleeping.
Emerald doesn't like Pokémon themselves, but he likes Pokémon battles. To the amazement of Todd, he is an expert at battling. As he does not train his own Pokémon, he borrows the Pokémon he uses from Crystal.
Later on, Emerald's reason for visiting the Frontier is revealed: he was assigned by Professor Oak and Crystal to capture Jirachi. He attempted first time after his fight with Brandon at the Battle Pyramid and was almost successful. However, after that, he went back to his original challenge.
Despite his protests, his Pokémon love him greatly and tend to get jealous of each other; recently, his Sudowoodo (revealed to be female because of it's motherly nature) and Sceptile got into an argument over Emerald's food and began cooking with berries in a frenzy before being broken up by Emerald's Dusclops. His Sceptile's interest in Emerald's PokéDex indicated that it evolved from Wally's Grovyle. This was later confirmed.
Emerald carries several gadgets with him, primarily his extendable mechanical hands. He also has a pistol that shoots soil from various places around the world. By shooting a Pokémon with a "seal" of soil from its birthplace, the Pokémon is calmed by a sense of nostalgia.
Emerald has the ability to determine the birthplace of any Pokémon by sight. He uses this ability along with his gun to calm rampaging Pokémon that have been illegally added to the Battle Frontier, and has taken three of these cured Pokémon as his own.
This has been updated from the most recent chapter of the Battle Frontier Saga.
Borrowed from Crys
This has been updated as of the most recent chapter of the Battle Frontier Saga.
Used in the Battle Pike
Used in the Battle Pyramid