Shou

Shyo is the protagonist of the Duel Jack!! series of the Duel Masters Manga.

Plot
He is a junior high student and his brother is a junior duelist. His younger brother wanted to look up to his brother as a duelist so he became one for the sake of his brother. He defeated many duelist on his way upwards, he even find his younger brother's lover girl friend.

Soon he realized his potential in the card game and started to implement his deck after every opponent he defeated. He started with a simple Fire Civilization rush deck and started to realise he needs a stronger deck with stronger cards for which he needed more mana as well and so combined his deck with Nature Civilization which would help his ace card. He then learned of the new civilization Rainbow Civilization and met his rival Hagi.

Finally he perfected his deck with Rainbow Civilization cards and became the first Junior High Champion. Due to his way of dueling in which he would enjoy the game no matter what and played almost like a heroic charcter for his younger brother, he was given the title of "Duel Jack!!".

Deck
He used a Fire, Nature and Rainbow Civilization deck.
 * Heavyweight Dragon (His ace card)