Sssiii

Sssiii was a male Slith of red coloration, weighing 60 kg. He was somehow obtained by the Galactic Circus and toured with them on a number of worlds including Tatooine. Sssiii had only limited intelligence (corresponding to a 10 year old Human), and was unable to speak to its companions; Sssiii communicated instead by striking the ground with his tail. During shows put on by the circus, Sssiii provided entertainment by playing chess against spectators.

Behind the scenes
Sssiii appears as a non-player character in the roleplaying adventure Le facteur X, published in Casus Belli. This is a French gaming magazine and it is unknown whether the article went through licencing; therefore Sssiii's canonicity is ambiguous.