Evershell (Ogniguscio in Italian) the Turtle is one of the two wisest creatures in all of Pocketville, the other being Durillia, who considers him her archenemy. He has a distant relative named Slowpoke. He lives in a hidden cave far away, and is guarded by a panther and cheetah. He gives Kate and friends advice in the form of riddles (much to Danny’s dismay), because he believes in their intelligence.
He knows Princess Ava very well and they shared many secrets, one of which being a field full of golden flowers that bloomed after every Friendship Ceremony.
His first appearance is in "Evershell The Wise" when he is met upon by the Royal Guards because they had no idea how to get Kate home, the princess was no where to be found.
Then, he appeared in "A Big Responsibility Part 1" because with the princess gone, they had no idea how to fulfill her duties. But, all he said was that only Kate could do fulfill the duties of the princess.