Commander Kolo was a 22nd century Xindi officer who supported Xindi-Reptilian Commander Dolim.
Kolo was the commanding officer of an attack squadron that defended the Xindi weapon from Enterprise NX-01 and the Xindi Council on February 13, 2154 as it prepared to depart for Earth. Kolo maintained what was described as a "substantial force" in position protecting the weapon, buying enough time for the weapon to escape through a subspace vortex. (ENT: "Countdown")
This character was only mentioned in dialogue.