Bubbles

Bubbles is one of Dr. Robotnik's Badniks that made his debut in Sonic the Hedgehog 3. Looking deceivingly innocent with his smooth, blue exterior, Bubbles has hidden spikes that pop out of him body.

Sonic the Hedgehog 3
Bubbles, like many of the Badniks in Marble Garden Zone is very deceiving in his appearance.

Sonic the Hedgehog 4
Bubbles makes his return in Sonic 4. This time there is a number of variations in color and attaxk in different Bubbles badniks. The traditional Blue Bubbles with spikes is present. However due to Robotnik's budget cuts, some Bubbles will not have any spikes. Red colored Bubbles are making their debut in this game aswell. Red Bubbles are said to be more difficult than blue.