Tyro

Tyro is the first shark, also the first megaladon and the first fish. According to legend, when Tyro was borne, he circled the Big Blue and found he was alone. So he swam around it once again and with each stroke of his tail created everything in the ocean. He got five sharks and positioned them in a Line from First to Fifth, with himself as leader. The First was Finnbarr whose descendants became the great whites. Second was Longfluke, whose children became the bull sharks. Third was Machiakelpi, whose sons and daughters became the mako. Fourth was Ramtail the Battler, whose young became the tiger sharks, and Fifth was Leynar the Magnificent, whose descendants were the threshers.Tyro called this Line the First Shiver. The First Shiver went on to protect all of sharkkind, and go with shiver law. But after a long life Tyro grew weary, and summoned his Five in the Line, telling them that one day a great evil would threaten all of sharkkind, and when this day came only a united First Shiver would be enough to defeat the evil. Tyro went to the Sparkle Blue, where his spirit swims to this day. But the First Shiver fought about who would be the one to lead the attack against the coming evil, and none of them could agree, and so swam off to create their own shivers. He was the first known shark to go to the Sparkle Blue.

Shark Wars
Tyro only appears in the prologue of this book, where it tells the story of the first sharks and shivers.

Trivia

 * Tyro is a brother of Gray, since he is a megaladon like him.
 * Tyro was the first shark, fish, and megaladon.
 * Tyro was the first fish to go to the Sparkle Blue.
 * Tyro has Rogue Shiver blood, since he is Gray's brother.
 * Tyro also has Coral Shiver blood, since Gray was born in that shiver.
 * Tyro is a brother to The Seazarian, since he is also a megaladon.