E-114 was created with several other robots. One was known as E-101, who was the creator's favourite. However, after years of being a robotic slave, all the robots except E-100 Alpha, E-102 Beta, E-103 Gamma, E-104 Omega and E-114 Sigma were kept by there creator. The robots stayed at the island, when E-114, after several years, crafted the island into beauty.
Sigma, being a robot, has few friends. He is only known to have 1, a girl named Teletha (But many call her Tessa for reasons unbeknown to Sigma). He is has a small friendship with E-103 Delta and E-104 Epsilon.