Tchukk is an Uklakk mercenary, a species known for having two bodies but only one mind. He was hired onto Tagon's Toughs during the recruiting drive that followed their mission to Ghanj-Rho.
Following his induction into the Toughs, Tchukk's radioempathic link was bolstered with the use of hypernet nodes. This allowed him to coordinate both of his bodies at significantly greater distances, and it was quickly discovered that this newfound mobility made him an ideal pilot capable of coordinating two vehicles simultaneously. He was subsequently recruited into Ellen "Elf" Foxworthy's Light Armored Platoon.