Let's make this easier to understand, shall we? I think Sonic is the most familiar bio style.
Name: Dragga or Dragga Ryuu
Age: Depends on story
Personality: Dragga is a stubborn fighter and a caring son and brother. He never backs down from a fight unless he knows for sure a friend or family member is going to get hurt. His trademarks, no matter what story or style, are his long golden mane, his grey eyes, his ceremonial earrings, though he doesn't always wear them, and his black vest. Despite his stubbornness, arrogance, and sometimes plain stupidity, Dragga is a caring Dragon at heart.
Name: Ray or Rei Ryuu
Age: Depends on story (Usually young)
Personality: Ray is a bright young dragon who was adobted into Dragga's family when he was young. Not knowing any other family, he easily latched onto Dragga as his big brother. His trademarks include the golden gem on his forehead, his golden eyes, his silver mane, and his love for magic. Rei has a musically side as well, taking up the flute to either calm himself and others, or to cast magic. Although he isn't too good for battle, he'll always try his best.
Name: Dinos or Dinos Taiyogami
Age: Depends on story (Normally in his twenties)
Personality: (Still hasn't forgiven Dragga for letting someone use him as a persona on FAC) Dinos is a mystery in the Sonic world. Dinos Taiyogami is a young dragon who was left orphaned after his mother was slain by a beast. He then found a new home with a human couple who accepted him as a dragon. He was beaten and forced from the town by the villagers and nearly killed. When he isn't in Sonic style art, he has two dots under his eyes that were first used to tell him apart from his twin brother, Draco.