Mr. Turtleman

Mr. Turtleman is a Turtle Animaloid and retired ninja who resides at the Retirement Home for Aging Ninja Turtles.

Profile
When The Dragon attacked Little Tokyo in "Stop Dragon My Cat Around!", he approached a ninja turtle retirement home where an elderly Turtle was slowly walking forward with his cane. As the Dragon moved forward, he wrecked another building, leading a piece of debris to fall down, knocking the turtle out of his shell, the turtle yelled "cowabunga", getting and running away.

The Turtle continues to appear in later episodes as a background character.

Kyatto Ninden Teyandee differences
The elderly turtle is not a ninja and is simply an ordinary citizen, he also doesn't spout cowabunga.