Orbot

Orbot, model number SA-55, is a management robot created by Dr. Robotnik as a form of secretary. When Robotnik is busy, usually because of thievery under his "Eggman" alias, Orbot is often left as the doctor's liaison to the United Federation and the leader of Westopolis.

Personality
When meeting with the leaders of the United Federation, Orbot is exceedingly polite. However, behind closed doors he is incredibly sarcastic and constantly criticizes Robotnik's plans.