Buzzer

Buzzer (Stinger スティンガー in Japan) is a second generation Badnik created by Dr. Robotnik in Sonic the Hedgehog 2 for the Sega Mega Drive. Buzzers appear in Sonic Pocket Adventure. This Badnik also appears in Sonic Colors and Sonic the Hedgehog 4.

Physical appearance
Disappointed by his earlier Badnik design, the Buzz Bomber, Robotnik went to work on a new model of bee-like robots, called the Buzzer. There are many differences between the two. Although the stingers of both models work in a similar fashion, storing energy, the Buzzer's tends to more look wasp-like in design. The jet that propelled the Buzz Bomber, stored on its undercarriage, was moved to the top of the Buzzer, which unfortunately gave it a lower top speed. Also, whereas the Buzz Bomber was connected solidly throughout its design, the Buzzer was basically a head and abdomen connected to its rear end by a thin metallic pole, giving it an appearance physiologically similar to a mud dauber wasp. The Buzzer's standard colors were a red faceplate, black torso, and a typical yellow and black striped design for the back end where the stinger was located.

Attack pattern
The Buzzers are commonly paired together, although solo units are not necessarily uncommon. They drift lazily across the landscape until they find a target. When the target is sighted they will pivot their rear end, stinger extended, and fire a concentrated thermal energy ball at the enemy. Although slower than their precursor, the Buzz Bomber, the Buzzer were programmed to fire at more random intervals, making them less predictable when trying to avoid them. Sonic was easily able to kill them due to their low speeds.

Trivia

 * In Sonic Blast an unnamed badnik is based on Buzzer.