Dr. Zaius is the lone Orangutan figure of the Mego Planet of the Apes line, based on the character from the first two Apes movies, played masterfully by the venerable Shakespearean actor Maurice Evans. As Minister of Science and Chief Defender of the Faith, Zaius was responsible for the preservation of Ape Culture, which also meant that it was his duty to stifle discovery of the "long dead but superior human culture."

Mego sculptors did a wonderful job of capturing the likeness of Zaius. His beige outfit includes knee-pants and a jacket, with vertical strips of brown fabric representing the leather glyphics of the originals, and fake fur cuffs. An orange outfit would have been more accurate, but Mego fans should be thankful they didn't get Dr. Zaius in blue, as he was depicted in dozens of other toy lines.

Dr. Zaius came in the coolest of ALL Ape boots: Very tall and made in black plastic, these boots had fantastic "Glyphics" molded into the upper sides. These boots were unique to Zaius, and never used for any other figure. Very first issue figures, however, were packaged with a simpler black hero boot (available with the fishing outfit for Action Jackson). He was available on a type1 and type 2 body although type 1 is much more common. The only really significant variation found on Dr. Zaius is hair color, which could range from yellow to orange.

Other than the two kinds of boots, there are no outfit variants for Mego Zaius, other than the different shades of hair colouring which really doesn't count.