The Meter Droid is a humanoid robot based on the typical plumber. It possesses a spherical torso, shoulders and elbows, and a pole-like gray head. Also, instead of legs, it has a yellow propeller beneath its waist. Its torso, shoulders and elbows are colored yellow, and its torso is designed so it looks like the Meter Droid is wearing black overalls. The Meter Droid also has white glove-like hands, a flat white mouth, and cartoonish eyes with black pupils. It also wears what looks like a yellow cap.
After getting about halfway through Oil Ocean Zone, Sonic, Tails and Knuckles came across the Meter Droid, who promptly fought them using its spanner and the Zone's steam vents. Although the trio beat this foe, the Meter Droid's destruction resulted in dangerous flumes getting released all over the Zone, making Sonic and his friends' trip much more dangerous.
Powers and abilities
Thanks to its propeller on its bottom, the Meter Droid is capable of flight. It can also throw boomerangs effectively.
The Meter Droid wields a giant, gray adjustable spanner on its back which it uses like a boomerang in combat. Curiously enough, it flies and returns like an actual boomerang.
The battle begins with the Meter Droid already hovering in the air, awaiting the player's arrival. The robot's hitbox will not be active until the mini-boss music begins playing. At all times, the boss's propeller is constantly spinning to keep it airborne, and is harmful to the player, so they must take care when hitting the robot.
The Meter Droid will begin its attack pattern by swooping downward to the other side of the arena, and then toss its wrench directly at the player's current co-ordinates like a boomerang. After that, it will go into the background to twist one of the valves and activate the six furnaces in the arena. The two furnaces in the center are safe; the other four will launch their lids into spikes traps above the arena. During the time the boss is operating the valves, he will be out of reach.
After landing six hits on the Meter Droid, this boss will explode, and its destruction will ignite the oil and set the entire Zone ablaze for Act 2. The player can then touch the Goal Plate that falls from the sky and finish the Act.