Voiced by: B. D. Wong
The #1 agent of Global Justice, Will Du was brought on by Dr. Director to work alongside Kim when she was recruited to rescue a former weapons researcher from Duff Killigan. This was an assignment that Will particularly resented, since he sees world saving as a "professional's" job and didn't appreciate an "amateur" like Kim horning in on what he felt was his racket. This caused Kim no end of grief, since she spent more time fighting with Will than with Killigan himself. However, they eventually managed to find a small amount of synergy, and in the end, were able to stop Killigan from turning the entire world into his own private golf course.
A consummate professional, Will takes his job as an agent of Global Justice very seriously. So seriously, in fact, he doesn't seem to realize it's a job he's not particularly good at. He is well educated and academically competent (as well as having access to all of GJ's best equipment and resources). His name is a pun on the phrase "Will do", which reflects his personality.