Doctor (Dr.) Locus is the father and creator of Melody, his robot daughter. He debuts in Bradventure and made a cameo in "No Harmony with Melody, and makes his final appearance in Turncoats as the revealed final main antagonist, where he makes an attempt to take control of Dr. Nora Wakeman's inventions.
He is voiced by Grant Albrect.
Dr. Locus is a stout and fairly stocky man. In his reference to his work creating robotic farm animals, he has the design of a typical farm worker. He wears dull green overalls and underneath is a white buttoned shirt. Although roughly middle-aged, Dr. Locus seems to have underwent premature balding only with two strands hair remaining, he has a curly cream yellow beard that extends all the way to his chest. Regardless of his workaholic nature, his beard is well neatly trimmed along with his eye brows. His eyes are tealish blue, he wears glasses, and has a big reddish nose.
In addition to Vexus, Smytus, and Armagedroid, Dr. Locus has proven to be one Jenny's most formidable and dangerous foes. By using his engineering and intellect, he is able to manipulate, intrude without warning, and even control any robot to his own advantage using a remote control device he invented, as seen in the final episode Turncoats.
Dr. Locus was also able to completely disable and incapacitate Jenny in order to download and steal her data (in Bradventure), which he presumably later used to upgrade his own robot daughter Melody to make her just as advanced and powerful (as seen during her battle with Jenny in No Harmony with Melody).
- Locus is the final antagonist of the entire series.