Egg SWATs provide Dr. Eggman with a tireless legion of soldiers and labour force. Their A.I. is limited and they have not been shown to be capable of speech, but are completely loyal to Eggman and will follow any of his orders without question.
The Egg SWATs are highly versatile robots and can be outfitted with a number of tools and gadgets. They have been shown to wield laser weapons, carry lances and/or shields, and some even have jet packs that allow them to fly.