Commander Kolo was a Xindi officer who supported Xindi-Reptilian Commander Dolim.
He was the commanding officer of an attack squadron that defended the Xindi weapon from attack on February 13, 2154 as it approached Earth. Kolo maintained what was described as a "substantial force" in position protecting the weapon after several Xindi-Aquatic cruisers attempted to destroy the opposing forces. (ENT: "Countdown")
This character was only mentioned in dialogue.