Buballs were multipurpose robots that could be used for both combat by shooting lasers and for reconnaisance by acting as cameras.

The Buballs appear in episode 2 "Sonic to the Rescue", after Eggman gets teleported to Earth. More Buballs appear in episode 15 "Skirmish in the Sky" where they attack Sonic after being deployed from the Egg Fort. Another Buball appears in episode 5 "Cracking Knuckles" where it projects artificial Chaos Emerald energy spikes.

E-33 Buball - Sonic X/Sega