3 and 4

3 and 4 are twins, and the Historians of the group. They are unable to speak, instead using flickering lights in their eyes to communicate with each other and 4 can project images from his/her eyes for the other members of the group. They are very intelligent and energetic.

Trivia

 * 3 and 4 will meet Jimmy Neutron and the crew in Jimmy Neutron Meets 9.