Boing-o-Bot
From Sonic Retro
Bane Motora, (バネモトラ) is a badnik found in Sonic Chaos, a red version being found in Turquoise Hill Zone while a blue version in Mecha Green Hill Zone. They are based off Sonic 1's Moto Bug (named "Motora" in the Japanese manual), but have a spring attached to the top, meaning they can only be destroyed via the sides.
Turquoise Hill Zone's boss, Great Bane Motora Gold is a bigger version of this badnik.