Dyer / Legends Dyer was a Force - attuned Human male who held the rank of colonel in the Imperial Army . As an Imperial officer , he worked closely with Tiaan Jerjerrod , an Imperial Moff who oversaw the construction of the second Death Star battlestation , while planning the defensive systems of a bunker on the Forest Moon of Endor . The bunker , which generated a shield for the unfinished orbiting Death Star , was under the supervision of Dyer , who was responsible for the defense of the installation . In 4 ABY , hoping to destroy the bunker , a group of Rebels infiltrated it and ambushed the Imperial troops stationed there . Dyer then ordered his men to enter the base and capture the intruders . When Dyer confronted Rebel General Han Solo , Solo threw a toolbox filled with explosive charges at the colonel , causing him to fall over a platform railing . Biography . Dyer , a Force - attuned Human male , was an Imperial officer who held the rank of colonel in the Imperial Army . At some point during his service to the Galactic Empire , Dyer worked closely with Moff Tiaan Jerjerrod , an Imperial militant who oversaw the construction of the second Death Star battlestation . The two planned the defensive systems of an installation that supplied a shield for the unfinished Death Star , which was orbiting the Forest Moon of Endor . The bunker , which was located on the Forest Moon , was supervised by Dyer , who became responsible for completing the defense of the bunker . Dyer and Jerjerrod would also plan the deployment of ground troops on Endor . As part of another task , Dyer took part in commanding an elite group of troops guarding the shield generator . The group consisted of members of the 501st Legion , Imperial Lieutenants Grond and Renz , as well as the stormtrooper Wallen . In 4 ABY , a group of Rebel Alliance members infiltrated the bunker to destroy the shield generator — which would allow the Rebels ' orbiting fleet to attack the Death Star itself . In order to stop the intruders , the Imperial group entered the base . Dyer was joined by Renz and Grond , who became the Imperial colonel ' s primary aide during the Rebel attack . After the Rebel group ambushed the stationed Imperial officers inside the bunker , Dyer confronted Rebel General Han Solo , pointing a blaster pistol at him and ordering him to freeze . However , Solo threw a toolbox full of explosive charges at Dyer , which caused the colonel to fall over the railing of a catwalk and into a generator room below , resulting in his apparent death . Following the event , Renz took command of the elite Imperial group . After later destroying the bunker and the orbiting Death Star , the Rebels won the Battle of Endor . Personality and traits . The Force - attuned Imperial Colonel Dyer had brown hair , brown eyes , and fair skin . Prior to the Rebel attack on Endor , Dyer worked closely with Moff Tiaan Jerjerrod twice — initially while planning the defensive systems of the Endor shield generator bunker , and later organizing the deployment of the ground forces on Endor . A leader , Dyer took part in commanding an elite group of troops on Endor , and even supervised the shield generator bunker and its defensive systems . Even so , he was instructed to hold troops in reserve . In his possession , Dyer had a blaster pistol and an E - 11 blaster . Behind the scenes . Dyer first appeared as an unnamed Imperial officer in Richard Marquand ' s 1983 film . Ben Burtt , the sound designer for the film , was given a small role during production , though his brief cameo was uncredited . Burtt ' s character was not featured in either the or of " Return of the Jedi " . A still image of Dyer was featured in the 1998 " " CD - ROM . In 1999 , Dyer was featured in the " Star Wars " Customizable Card Game set " Endor Limited " . His card further established his character and identified him as " Colonel Dyer , " and his role as an Imperial officer was expanded with two other cards from the set . In 2008 , Dyer was given his own entry in the " The Complete Star Wars Encyclopedia " . His fate , however , was not stated until the release of the Gentle Giant Studios Lieutenant Renz bust in 2008 , in the accompanying bio on the packaging . In the 2004 DVD release of " Return of the Jedi " , Burtt commented about his cameo as Dyer in the audio commentary . The scream that Dyer makes when he is knocked off the catwalk is meant to be an attempt at replicating the Wilhelm scream , which Burtt , in his role as sound designer , has attempted to include in all of the films on which he has worked . Actor Barrie Holland , who portrayed Lieutenant Renz in the film , recalled that shooting the scene that featured the characters Dyer and Renz was difficult due to Director Richard Marquand having conflicting views with his assistant director and first cameraman . Shooting the scene took " several beats " in order to get it right , and Holland believed that a stunt man played Dyer before finding out that Ben Burtt portrayed the character . Hasbro was originally going to include Dyer in a " Return of the Jedi " – themed battle pack titled " Shield Generator Assault , " but he was pulled from the set prior to its release in 2008 . A year later , another " Return of the Jedi " – themed battle pack , titled " Battle for Endor , " included Dyer , as well as Jedi Knight Luke Skywalker and the Ewok Warok . Appearance inconsistencies . Dyer ' s brief one - line dialogue was spoken by Renz in the . In a similar manner , his character was not created in the original revised third draft of " Return of the Jedi " screenplay and in " " . In the script , both Dyer ' s and Renz ' s lines were merged and the person who shouts " Freeze ! You Rebel Scum " was identified simply as " Commander . " However , in " Screenplays " , Dyer was identified as " Imperial officer , " while Renz was named " Commander . " Dyer did not appear in the radio adaptation of " Return of the Jedi " . Unlike in the film , his " Freeze ! " line was given to Han Solo in the dramatization . Dyer was not present in the comic " " , and as was the case with the radio drama , Solo was given his line .