One of Mr. Ray's students, Nemo meets Tad and his friends while waiting to start school. He was part of the group who saw the boat. Like the other children, he tries to see how close to it he can swim. When the diver appears, he flees with the rest of the class.
He briefly appears at the end welcoming Nemo and newcomer Squirt into the class.
Just like Pearl and Sheldon, Tad doesn't have any speaking parts.