Gama - Senn The Gama - Senn were a sentient , humanoid species from the Gama system . Gama - Senn had two thumbs per hand and flat facial features . In 11 ABY , the Gama - Senn ruler was convinced to swear the Gama system ' s loyalties to Galactic Emperor Palpatine after a demonstration of the Galactic Empire ' s superweapon , the Galaxy Gun . Palpatine scoffed at the Gama - Senn representative for withholding allegiance until swayed by fear . Biology and appearance . The Gama - Senn were humanoid sentients with hands distinguished by at least four digits each , two of which were thumbs . At least one member of the species had yellowish - brown skin ; large , rounded ears ; and forward - oriented eyes with white sclera . The Gama - Senn mouth was large , with prominent facial muscles around the lips , and the nose was small and barely extended from the face . Society and culture . The Gama - Senn inhabited the Gama system , located in the Core Worlds . In 11 ABY , the entire system fell under the rule of a single individual . On at least one occasion in 11 ABY , the ruler wore clothing that consisted of a violet ensemble with tails , shoes , and orange pauldrons . The Gama - Senn leader also wore a maroon headband , tied at the left side of the head . History . The Gama - Senn originated from a homeworld in the Gama system . The world became integrated into the galaxy at some point between 20 , 000 and 15 , 000 BBY as part of the Southern Core region of the Core Worlds . The species ' home system fell within territory controlled by the Galactic Republic from 1004 to 1000 BBY , during the New Sith Wars . The system remained within Republic space during the Clone Wars . After the rebirth of Galactic Emperor Palpatine into a clone body in 11 ABY , the Gama - Senn remained unaligned with the reborn Galactic Empire . However , the ruler of the species ' home system joined other delegates on a visit to the Imperial throneworld , Byss , to behold the power of the Empire ' s new superweapon , the Galaxy Gun . After witnessing the weapon destroy the New Republic troopship " Pelagia " with a missile launched through hyperspace — an event broadcast to Byss via subminiature probe drone s — the Gama - Senn leader submitted to the might of the Empire . Nevertheless , the Gama - Senn ' s acquiescence merely angered Palpatine , who disdained the species for only capitulating due to fear . By 137 ABY , the Gama - Senn ' s home system had fallen within a domain known as the Core Worlds Security Zone , part of the Sith Lord Darth Krayt ' s Galactic Empire . Behind the scenes . The Gama - Senn appear briefly in " " , a 1995 Dark Horse comic book written by Tom Veitch and illustrated by Jim Baikie . The art style used employs colored lighting in the scenes featuring the Gama - Senn character , so ascertaining the species ' skin color is difficult ; the description above assumes the representative ' s skin tone and clothing color is not distorted significantly by lighting effects . Similarly , the top of the character ' s head is black , but it is difficult to determine whether this represents hair or some sort of hat . The species is mentioned in the Gama system ' s entries in both 1998 ' s " Star Wars Encyclopedia " and 2008 ' s " The Complete Star Wars Encyclopedia " .