Dr. Tomoki (Dr. トモウキ Dokutā Tomouki?) is Specter's partner in crime during Ape Escape 3. He was the test subject for wearing the Peak Point Helmet in a science experiment while working with the Professor and Aki. Due to an accident, Tomoki is now stuck wearing the Pipo Helmet. He keeps his helmet from being revealed by covering it with a giant yellow afro wig. After being defeated by Kei and Yumi, he becomes exhausted from the battle and lets his head down, thus making the wig come off of him. As Specter watched through the monitor, he finds out and ridicules him. As a result, Tomoki switches his allegiance to Kei and Yumi. He was seen again on the space station promising to stop Specter's plan and promised that he would see them again. But as soon as Kei and Yumi went to escape, he secretly lamented that the only way to stop it is to blow up the space station, taking his own life along with it. Kei and Yumi witness the explosion, and his death as they escaped. They soon discover afterwards that he survived (as seen in the credits), as he revealed himself to Kei, Yumi, and Aki outside the TV Station. He is voiced by Nolan North in the American version.
- His special attack is "LUXURY BEAM!!!", in which he sweeps a large rotating laser across the battlefield. In the UK version, he says "BEAM-O-MAGNIFICO!"
- In Ape Escape 3, there is a suggestion that Aki and Dr. Tomoki had a once close relationship long ago aside from being lab assistants for the Professor.