Egg Mobile-H

The Eggmobile is the boss of the Green Hill Zone in Sonic the Hedgehog (16-bit). It is piloted by Doctor Eggman and equipped with a massive, checker-board pattern wrecking ball, that hangs suspended from its underside by a chain. This version of the Eggmobile is the first and most famous in the Sonic the Hedgehog series, and has reappeared in other games.

Sonic the Hedgehog (16-bit)
The battle takes place at the end of the third Act of the Green Hill Zone, on a flat piece of grass with two floating platforms above it. Eggman will fly back and forth across the screen, swinging the wrecking ball from side to side. To defeat him, Sonic must leap onto one of the floating platforms and then spin jump onto Eggman eight times. This will destroy the Eggmobile, as well as every link in the chain and the wrecking ball itself, and Eggman will flee, allowing Sonic to open the Egg Capsule and complete the level.

Sonic & Knuckles
The wrecking ball Eggmobile also appears as a boss in Sonic's story in the Sky Sanctuary Zone in Sonic & Knuckles, in which it is piloted by Mecha Sonic.