Guardian police droid

"Put your hands up!"

- A police droid

A model of police droids were utilized by the Coruscant Security Force to assist with law enforcement on the galactic capital planet Coruscant during the waning years of the Galactic Republic. The blue-gray police droids had masculine programing and were humanoid in shape, with a head that formed into a cylindrical helmet. They patrolled the city and responded to calls either on foot or in BARC speeders and Coruscant police speeders. Most often, the police droids were the first responders to situations. They created perimeters, questioned witnesses, and collected evidence before handing the cases over to organic police officers and investigators. Police droids were armed with blaster pistols and batons. The police droids were involved in several cases, including the investigation of the kidnapping of Che Amanwe and Chi Eekway, the daughters of Chairman Papanoida of Pantora. They also assisted Lieutenant Tan Divo during the homicide investigation of Rodia Senator Onaconda Farr. They collected evidence, secured the crime scene, and assisted in arresting the murderer. By the end of the Republic, the police droids began to be phased out.

Description
"Drop your weapons and come with us quietly!"

- A police droid

The Coruscant Security Force utilized a model of police droids on the capital planet Coruscant to assist organic police officers in maintaining order on the urban world leading up to and during the Clone Wars between the Galactic Republic and the Confederacy of Independent Systems. Specifically, the police droids were deployed on the upper levels of the city, while the rougher underworld police officers patrolled the lower levels. While given combat programming, their primary function was to prevent people from being harmed.

The police droids were humanoid in shape, with arms and five-fingered hands, legs, a central torso, and a head. The top of the head formed into a tall, cylindrical helmet. The head also sported glowing, yellow-white photoreceptors and a tiny mouth, which allowed the droids to intake fluids. The units were painted in a blue-gray color scheme and wore the Coruscant police symbol on their helmet, as well as the upper left section of the breastplate. They were programmed as masculine and could speak Basic. When shut down, the droids could be activated remotely through devices such as a datapad. The droids could also intake fluids through their vocabulator.

Police droids were equipped with blaster pistols and batons to defend themselves. Their duties included setting up a perimeter, collecting evidence, preliminary interrogations, and holding and arresting suspects. When on patrol, the police droids either traveled on foot or used BARC speeders and Coruscant police speeders.

History
"That is a stolen vehicle. Put your hands in the air!"

- A police droid, to Padmé Amidala

The Coruscant Security Force had used police droids for some time before the eruption of the Clone Wars. Early during the war, Jedi Master Tera Sinube and Jedi Padawan Ahsoka Tano discovered the lifeless body of a Trandoshan named Nack Movers at his apartment. Police droids were dispatched to assist the Jedi with the investigation. After the two suspects, Ione Marcy and Cassie Cryar, fled the apartment, the police droids gave Sinube a BARC speeder to assist him in tracking the fugitives. The two Jedi found Marcy and Cryar a short time later at a train station, and the police droids took Marcy into custody. Cryar was able to slash two police droids with Tano's lightsaber and escape from their clutches. However, after a brief hostage standoff, which Tano was able to end, the police droids also arrested Cryar.

After Davu Golec of the Republic Ministry of Intelligence was killed by a Death Watch assassin during a secret meeting with Duchess Satine Kryze of the planet Mandalore, a police probe reported to other police and Coruscant Guard forces that the duchess had been the murderer, since she was the only one near the body. The duchess fled from the scene, and the arriving police droids and Coruscant Guard riot troopers chased after her. However, Kryze ducked into an alley to avoid capture. Flying out of the same alley, a driver of a speeder was wearing a hood in a similar way to Kryze's outfit. Believing that Kryze was the driver of the speeder, police droids on BARC speeders also joined the chase after the speeder. With the attention of the police on the speeder, the duchess escaped the area.

Police droids assisted Police Lieutenant Tan Divo in the investigation of the abduction of Che Amanwe and Chi Eekway, the daughters of Chairman N. Papanoida of Pantora. During the inspection of Papanoida's apartment on Coruscant, Divo and the droids failed to discover that the Papanoidas' Icon of the Moon Goddess statue had been moved from its original location. Not noticing anything amiss, they overlooked a bloodstain belonging to the bounty hunter Greedo underneath the icon. Amanwe had hit Greedo with the icon during the kidnapping. Papanoida, upon discovering the blood and identifying it as Greedo's, was able to track him down and rescue his daughters.

During a political debate in the Galactic Senate over a Republic military spending bill, several Republic senators were attacked in an attempt at intimidation. One attack was against Naboo Senator Padmé Amidala by the bounty hunters Chata Hyoki and Robonino, whom the Separatist Head of State Count Dooku had hired to kill her. Two police droids, seeing Amidala being attacked outside of Senator Christo's apartment, interfered, although the thugs shot them and destroyed them by beating their heads on the ground. Amidala escaped in a speeder, with the two assailants in pursuit. Two other police droids noticed the speeding Amidala and also took after her, as the speeder was officially stolen.

By the time they caught up to Amidala, she had already shaken off Robonino and Hyoki. Thus, the police droids only saw the senator and no one else; accordingly, they stopped her for the theft of the speeder. Amidala was released from their custody after the situation had been explained, but the two thugs had already escaped. Later, Hyoki and Robonino attacked Alderaan Senator Bail Organa in the Senate Building parking area. Organa called for help, and his Alderaan Guard engaged the attackers in a firefight. Police droids responded to the scene, and one of the police droid–driven speeders slammed into Robonino, knocking him unconscious. After the firefight between Hyoki and the Alderaan Guard and police droids ended, Hyoki was also taken into custody.

During Lieutenant Divo's investigation of the murder of Rodia Senator Onaconda Farr, police droids assisted the inspector by searching for evidence and providing a backup police presence. Later, several police droids were the first responders at the Coruscant docks after Amidala and Organa were attacked by Farr's assistant, Lolo Purs. Though unknown at the time, Purs was the culprit for Farr's murder. When they arrived, the police droids secured the scene, looked for evidence, and questioned witnesses, including the two senators. After the additional murder of Senator Mee Deechi, the police droids secured the scene and began collecting evidence. Then they turned the evidence report over to Lieutenant Divo. As the investigation continued, Divo believed that Senator Halle Burtoni was the killer and had her placed under arrest. While questioning her in the Chancellor's office the real murderer was revealed to be Purs, who promptly took Amidala as a hostage. However, as Purs arrived at the suite's doors, Divo remotely activated two police droids stationed outside the office. The droids entered the room, startling Purs and allowing Amidala to subdue her. The droids then took Purs into custody.

By the end of the Clone Wars, the now aging police droids were generally phased out.

Behind the scenes
Police droids first appeared in the Star Wars: The Clone Wars television series episode "Lightsaber Lost," where their voices were performed by Tom Kane. The "Senate Murders" episode commentary states that the police droids had been used by the Coruscant police for a long time when the Clone Wars began, and that they were phased out by the time of the events of Revenge of the Sith. They also appeared and played a prominent role in the episodes "Senate Murders" and "Pursuit of Peace."

The police droids were based on the Keystone Kops, a series of silent film comedies about an incompetent group of policemen. In "Pursuit of Peace," a droid sitting in a police speeder is seen drinking a liquid before spilling it when spotting the speeding Padmé Amidala. Whether this was meant to factually describe the need for the droids to intake fluids or if it was simply comic relief has not been clarified.