Heavy King

The Heavy King is the secondary antagonist of Sonic Mania. It is the leader of the Hard Boiled Heavies, who all were sent out on the mission to find the Phantom Ruby, but got corrupted by it.

Appearance
While The Heavy King always was an advanced Robot who was made to help Dr. Eggman with things that he couldn't do, in terms of design, The Heavy King wasn't very complicated, it was basically a normal EggRobo, but then one day the Hard-Boiled Heavies went to find the Phantom Ruby and deliver it to Dr. Eggman, which made them more intelligent and strong. Changing it's appearance.

Matching The Heavy King's name, it has a quite stereotypical knight-king design, it has a knight helmet-like thing as a face, golden-bronze armor, a white crown symbol on it's upper body, spiked knee joints, spikey metallic shoulder pads, a red cape, meaning that it is the leader of the heavies, and red-golden feet.

It also has the stereotypical Dr. Eggman robot design, with the red and black body.