| Character | |||||
|---|---|---|---|---|---|
| Dr. Z | |||||
| Yes Dr. Venture, wired.... | |||||
| |||||
| 1st appearance: | The Buddy System | ||||
| Voice Artist: | Chris McCulloch | ||||
Dr. Z appears at the end of The Buddy System as a special guest. Action Johnny flips out when he sees him and asks, "Did my father send you?" and has to be given a Zima by Brock to calm him down.
Dr. Z then asks Rusty if he can shoot at him from his helicopter or throw scorpions at him. When Sgt. Hatred shows up for his appointed arching date, he sees Dr. Z and tells one of his Malice Troops to take out the surveillance equipment so he may take a picture with Dr. Z.
In the season 4 episode Self-Medication Dr. Z reveals he has long since retired from super-villainy and settled down with Mrs. Z. His only regret was not being able to have children. A problem promptly fixed by his adoption of Ro-Boy.

