Captain Sigon was an officer in the Klingon Defence Force who commanded several ships in the early 25th century. He was a fervent party-goer and oversaw the ritual, annual invasion of Raatooras.

After his ship, the I.K.S. Rotog, was taken over and ruined by extra-dimensional tribble, he and his crew were transferred to the I.K.S. Baetal. The resulting infection caused him and his crew to be transformed into tribble. He was slated to give birth to tribble offspring, but instead had a miscarriage before turning back to normal. [Read more]