Dolim Commander Dolim was a Xindi - Reptilian military officer , and a high - ranking member of the Xindi Council . In that capacity , he provided a voice pushing for the swift and total destruction of the Human species , in response to intelligence indicating that Humans would be responsible for the destruction of the Xindi homeworld in the 26th century . Personality . Dolim was cold and bloodthirsty , and ruthless in his efforts . While conferring with fellow Council members regarding the deployment of the weapon designed to annihilate Earth , he voiced his intention of hunting down every Human settlement and refugee caravan , in an effort to ensure that no Humans survived the attack . A rumor existed about Dolim , indicating that his daughter gave birth to a son , who was born with a deformity in his right arm . Although non - life - threatening , the deformity was enough to preclude future military service , something which Dolim was unwilling to abide . In response , Dolim had his own grandson poison ed . ( ) Dolim ' s attitude towards the other Xindi species could often be one of arrogance and superiority . He often commented on " humanoid arrogance , " and personally selected the Reptilian soldier from his own regiment who piloted the initial probe to attack Earth , claiming the soldier ' s name would go down in history as " a testament to the superiority of the cold - blooded . " ( ) Dolim was also an extremely religious man . In 2154 , when one of his lieutenants seemingly questioned the motives of one of the Guardian s , transdimensional beings whom the Xindi regarded as god s , Dolim threatened to kill his lieutenant , stating , " " if you ever question the Guardians again , your skin will adorn the bow of this ship . " " ( ) The Human threat . When the Xindi Council learned from the Guardians of the threat from Earth , Dolim became an advocate of swift and brutal action against the Humans , as a preemptive strike . He also pushed for the development of a bioweapon , in addition to the large - scale weapon being developed by Xindi - Primate Degra , although the Council disapproved this plan . Despite this , Dolim authorized one of his officers , Damron , to secretly begin working on the bioweapon , using physiological data provided by Rajiin , an alien female whom Dolim had placed on in 2153 . ( ) In 2154 , Dolim oversaw the violent interrogation of Jonathan Archer , " Enterprise " s captain , who had been captured at Azati Prime while attempting to destroy the Xindi weapon prior to its deployment . Dolim became frustrated , however , when Degra ordered the interrogation halted in order to confer with Archer as to Archer ' s assertion that the Xindi had been misled into attacking Earth . Dolim later ordered " Enterprise " attacked without authorization from the Council , an act which was halted by Degra ' s intervention . Later , when Archer came before the Council to present his case that the Guardians were , in fact , preparing for an invasion , Dolim feigned interest , in an attempt to buy time with which to appropriate the weapon and deploy it without approval . In the meantime , Dolim had learned that , in order to protect the secrecy of an alliance which Degra had formed with the " Enterprise " crew , Degra had ordered the destruction of a Reptilian warship . Confronting Degra as the Council was in recess , Dolim stabbed him to death , promising to do the same to Degra ' s wife and children , stating , " " your traitorous bloodline will end at the tip of my blade . " " ( ) Along with the Insectoids , Dolim took control of the weapon , using a subspace vortex to transport it to Earth . However , since the weapon had been designed with a failsafe which prevented its launch unless " three " launch code s were used , Dolim ordered " Enterprise " s communications officer , Hoshi Sato , abducted , for the purpose of forcing her to bypass the Aquatic encryption protocol s . En route to Earth , Dolim had Sato injected with a series of parasite s which invaded her neocortex , which reconfigured her synaptic pathway s to make her compliant . Although the procedure initially appeared to be working , Dolim was surprised to find that Sato was much more resistant than he initially believed , and had actually added a layer of encryption , making it impossible for the Reptilians to access the weapon ' s arming matrix . Despite this , they were eventually able to force Sato to decrypt the third code , and proceeded to initiate the pre - arming protocol s . ( ) While in the vortex , Dolim received a communication from the Insectoid vessel escorting the weapon , indicating that the Insectoids were beginning to doubt the Guardians ' true intentions . Dolim responded to this by ordering the Insectoid ship destroyed , unwilling to risk any more interference in his mission to annihilate Earth . Upon emerging from the vortex , Dolim ordered the immediate destruction of the research post Yosemite 3 . Immediately thereafter , Dolim ' s ship came under attack by an Andorian vessel commanded by Shran , who was attempting to assist the Humans in their efforts to stop the weapon . When Dolim realized , however , that the Andorian s were attempting to provide cover for Captain Archer and a team from " Enterprise " to board the weapon , Dolim transported aboard and engaged in physical combat with Archer , attempting to prevent him from initiating a self - destruct . Dolim initially had the upper hand in the fight , possessing superior strength and stamina , but he was ultimately killed when Archer placed an explosive charge on his back and subsequently detonated it . ( ) Appendices . Background information . When this Xindi - Reptilian character debuted in the third season opener " The Xindi " , he was not yet named . The character ( ultimately called Dolim ) was portrayed by actor Scott MacDonald . He at first did not have much background to base his performance on . Having played various other " Star Trek " parts , MacDonald found that Dolim ' s aggressive temperament was one of the factors that set the character apart from those earlier roles . " " This guy ' s just a villain , and there ' s a straight - forwardness about Dolim that I love , " " MacDonald explained . " " I drive this guy forward vocally , physically and mentally like a battering ram and see what happens . " " ( ) However , Scott MacDonald was also of the opinion that Dolim was ideologically restrained by being a considerably honor - bound , protective character . " " I am not playing the bad guy to the hilt here , " " he admitted . " " I think that Dolim , like all of the best villains , isn ' t really self - aware . Dolim truly believes that the humans will be the end of the Xindi , and he proceeds in a militaristic fashion in that way . I don ' t think it ' s like a venomous thing where he wants to kill everything in the galaxy . From the Xindi point of view , Dolim is the go - to guy who makes the tough decisions to preserve the life of the Xindi . That ' s how I see him . I think that ' s how you have to see him . He believes he ' s absolutely correct in what he ' s doing . The main thrust of it all is that I think Dolim thinks that the Reptilians are the superior species . That basic prejudice of , ' Yes , we all are Xindi , but the best Xindi is " my " Xindi . ' That can be a fatal flaw , but it is so human . " " ( ) Due to the prosthetic make - up he wore to play Dolim , Scott MacDonald was rendered virtually unrecognizable in the role . " " One time , I was [ . . . ] walking on the Paramount lot [ . . . ] I saw Rick Berman and began chatting with him , " " remembered MacDonald . " " After a couple of minutes , Rick finally broke down and asked , ' Who are you ? ' After I told him , he said , ' Oh ! Scott ! " " During the third season , some of the actors who played other Xindi Council members decided that Dolim was hermaphroditic . ( ) The recurring nature of the Dolim character allowed Scott MacDonald , who describes himself as a Trekkie , to thoroughly delve into the Reptilian ' s motivations and persona . This opportunity , as well as the role itself , appealed to MacDonald . The character ' s demise was therefore a disappointment to the performer , though he was ultimately accepting of the loss . " " Based on the things I do in the [ season ' s final ] episodes , which are some really dastardly things , I was feeling that there was only one way this can end , " " he reflected . " " As an actor , I was disappointed to see what happens to Dolim , sure , but as a " Star Trek " fan , you expect it . I don ' t want to go out , but if I do , I want it to be in a blaze of glory . " " ( ) The novel " Last Full Measure " gives his full name as Guruk Dolim .