Drill Eggman

From Sonic Retro

Drill Eggman is the first boss in Sonic the Hedgehog 2. Robotnik attacks Sonic and/or Tails while in a small buggy. A drill is attached to the front that will cause damage, regardless of if Sonic or Tails is spinning. Players must jump on the cockpit eight times to defeat him, while he drives left and right across the field. As a last ditch attack, Robotnik will fire the drill attachment before the boss is defeated.

A similar boss also appears in Sonic Advance's X Zone.

Sonic Cafe

The Sonic Cafe mobile phone re-release of the game features this boss with slightly more armor.

Sonic the Hedgehog 2 Bosses
Drill Eggman (EHZ Boss) | Water Eggman (CPZ Boss) | Hammer Eggman (ARZ Boss) | Catcher Eggman (CNZ Boss) | Submarine Eggman (HTZ Boss) | Drill Eggman II (MCZ Boss) | Submarine Eggman II (OOZ Boss) | Flying Eggman (MZ Boss) | Barrier Eggman (WFZ Boss) | Mecha Sonic (DEZ Sub-Boss) | Dr. Robotnik's Giant Mech (DEZ Boss)