Here are the profiles of the main characters. Note that ther Japanese names are given with family name first, then personal name, while Western names are given using the Western convention.
Yuuki Jyudai
House: Osiris Red
Age: 15
Deck Usage: Elemental Hero Deck
Duelist Type: ?
Monster: Flame Wingman, Thunder Giant, Hane Kuriboh, etc.
Marufuji Shou
House: Osiris Red
Age: 15
Deck Usage: Bicroid Deck
Duelist Type: ?
Primary Monster: Battloid, Storm Gyroid, etc.
Maeda Hayato
House: Osiris Red
Age: 16
Deck Usage: Oz Deck
Duelist Type:
Primary Monster: Des Koala, Big Koala, etc.
Tenjyoin Asuka
House: Obelisk Blue
Age: 15
Deck Usage: Cyber & Sporty Girl Deck
Duelist Type: ?
Primary Monster: Etoile Cyber, Cyber Blader, etc.
Marufuji Ryou
House: Obelisk Blue
Age: 17
Deck Usage: Cyber Dragon Deck
Duelist Type: ?
Primary Monster: Cyber Scene Dragon, Cyber End Dragon, etc.
Manjoume Jun
House: Obelisk Blue
Age: 15
Deck Usage: Dark Fiend Deck, V-to-Z Deck
Duelist Type: ?
Primary Monster: Infernal General Mefist, VWXYZ Dragon, Catapult Cannon, etc.
Professor Chronos de' Medici
House: Obelisk Blue
Age: 35
Deck Usage: Medieval Darkness Deck
Duelist Type: ?
Primary Monster: Antique Gear Golem, etc.
Misawa Daichi
House: Ra Yellow
Age: 15
Deck Usage: 6 Attribute Deck
Duelist Type: ?
Primary Monster: Hydrogeddon, Vortar Dragon, etc.
"Duelist Type" is a description of the character's gameplay style, but the Japanese print is too small and the text too extensive for me to translate at this time.
Two other Monsters have been shown as preliminary sketches: Sparkman, associated with Jyudai, and Burst Lady, associated with Asuka.
There'll a more streamlined and glitzier Duel Disk introduced in this series, but in his initial appearances Jyudai will still be using the Battle City model.
