Cos (OU)

Cos Yuskus was a blue-skinned Terugan and a member of Yon's original crew.

History
Cos was one of several Terugans (the others being Nov and Inv) who were recruited by Yon to serve as pirates under his command aboard the pirate vessel Unifeyed.

At some point during their adventures, the crew of the Unifeyed accidentally travelled through a plothole that led to the Shattered Mirror Universe. In their search for an exit, they drove too close to the Shattered Mirror Tybion and so were captured by the Ta'har. The Ta'har imprisoned Cos and his allies in a complex on the planet's surface, which is where they stayed until they were found and freed by Vorahk-Kah, who had previously absorbed the energy of an anomalous nebula and grown to massive size as a result. Vorahk-Kah grabbed the Terugans and placed them on top of his head, instructing them to hold on for dear life while he fought against the Ta'har forces amassing against them. Unfortunately, Cos lost his grip during the battle and fell off Vorahk-Kah, his body splattering over the pavement far below.

Trivia

 * Kon got Cos's name from a button on an Advanced DAL calculator, along with Advanced Dal itself, and its two known error functions Log and Tan.