This will give you a mental image of how they look. KINGDOM HEARTS is copyrighted to square and Disney, SONIC THE HEDGEHOG is copyrighted to sega.
Name: Sora
Specie: human
Age: 16
Outfit: KH II
Weapon: Kingdom Key
Accessories: Crown Necklace
special abilities: Drives
Look for the World: Caramel Hedgehog
Name: Kairi
Specie: human
Age: 16
Outfit: KHII
Weapon:Destiny Place
Accessories: bag
special abilities: revers the effect of darkness
Look for the World: Red Hedgehog
Name: Riku
Specie: Human
Age: 17
Outfit: KHII
Weapon: Way to the Dawn
Accessories: cast
special abilities: Dark based powers
Look for the World: Silver echidna
Name: Roxas
Specie: nobody
Age: 16
Outfit: Twilight Town
Weapon: Oathkeeper/Oblivion
Accessories: Rings and wristband
special abilities: Duel wielding
Look for the World: Blond Hedgehog
Name: Naminé
Specie: Nobody
Age: 16
Outfit: Same dress as ever
Weapon: none
Accessories: drawing pad
special abilities: power to manipulate the memories of Sora and those close to him
Look for the World: Blond Hedgehog
Name: Ventus
Specie: human
Age: ?
Outfit: BBS
Weapon: Fresh Breeze
Accessories: armor
special abilities: Wind control
Look for the World: blond hedgehog
Name: Terra
Specie: human
Age: ?
Outfit: BBS
Weapon: Gaia Bane
Accessories: Armor
special abilities: Darkness/Earth
Look for the World: like shadow just Brown and black highlights
Name: Aqua
Specie: human
Age: ?
Outfit: BBS
Weapon: Rain Fall
Accessories: armor
special abilities: Magic
Look for the World: Blue bat
Name: Lea/Axel
Specie: human
Age: ?
Outfit: BBS
Weapon: Chakrams
Accessories: none
special abilities: Fire
Look for the World: Red echidna
Name: Xion
Specie: replica
Age: 16
Outfit: Cloak of Org. XIII
Weapon: Kingdom Key
Accessories: none
special abilities: light
Look for the World: Black Rabbit
Name: Coy
Specie: werewolf/dragon
Age: 16
Outfit: Black T-shirt, black shorts, and brown boots
Weapon: Mending Ground/Divined
Accessories: time gem
special abilities: shield, speed, translation, Psychokinesis
Look for the World: six foot tall blue-gray wolf
Name: Dracana
Specie: werewolf/dragon
Age: 16
Outfit: a long gunmetal dress with a crimson emblem that looks like the heartless emblem
Weapon: Scythe Blade/ Animal Key
Accessories: none
special abilities: time, water breathing, Psychokinesis
Look for the World: Five Foot Eleven crimson-gunmetal
Name: Seatell
Specie: Griffon
Age: 16
Outfit: jean shirt, blue jeans
Weapon: Chained Swords
Accessories: none
special abilities: Ice, Stone
Look for the World: a five foot eight red-black griffon
Name: Sonic
Specie: Hedgehog
Age:16
special abilities: speed
Name: Amy Rose
Specie: Hedgehog
Age: 12
Outfit: Red dress
Weapon: Hammer
Name: Shadow
Specie: Hedgehog
Age: ?
special abilities: chaos powers
Name: Tikal
Specie: Echidna
Age: ?
Outfit: Her dress
Name: Miles "Tails" Prower
Specie: Fox
Age: 10
special abilities: flight by his tails
Name: Cream
Specie: Rabbit
Age: 6
Outfit: an orange dress
special abilities: flight by her ears
Name: Knuckles
Specie: Echidna
Age: 18
special abilities: strength
Name: Rouge
Specie: Bat
Age: 18
Outfit: a black jump with pink heart on it
special abilities: flight by her wings
Name: Silver
Specie: Hedgehog
Age: 16
special abilities: Psychokinesis
Name: Blaze
Specie: Cat
Age: 16
Outfit: Lavender suit
special abilities: Fire
More bio's later but now pairs
Sora and Kairi
Riku and Xion
Roxas and Naminé
Terra and Aqua
Ven and Dracana
Coy and Seantell
Sonic and Amy
Knuckles and Rouge
Tails and Cream
Shadow and Tikal
Silver and Blaze