Kalor was a Klingon soldier during the 23rd century. As an ensign aboard the IKS Flyer's Pride, Kalor raped a Vulcan female captured from a Federation starship. In 2281, Kalor was a commander and served under Krazz as they kept charge of kidnapped Federation Warrantors of Peace. Kalor convinced Krazz to let him run psychological experiments on the prisoners, leading to the deaths of Resh, Krn, and Jali.