Doctor J  

, ドクターJ

A former member of the Alliance's mobile suit development team who worked on Tallgeese and Wing Gundam Zero before leaving to establish their own projects in separate colony clusters and Earth. Dr. J, also known as Colony Cluster L1, created and trained Heero Yuy to pilot the Wing Gundam. He gave Heero his name and is listed as a cyborg by GundamOfficial. Dr. J wears tight-fitting eye lenses, has a prosthetic left hand, uses leg braces, and walks with the help of a cane.