He attempted to explain the conspiracy against the Jedi Order through the true purpose of the inhibitor chips placed within all clones, but his drugged state made him seem incoherent. Anakin disregarded Fives's story and decided to take Fives back to the Temple to be treated, causing Fives to become even more enraged.
After requesting Shaak Ti leave as Fives might be more comfortable explaining himself without her there, leaving only himself and his loyal shock troopers, Palpatine told Fives the truth about what the control chips were intended for and that he was behind it before ordering the shock troopers to kill him.
Shaak Ti, Nala Se and Fives traveled to Coruscant to present the ARC trooper's discovery to Supreme Chancellor Palpatine in person. But on the way, Nala Se surreptitiously injected Fives with an unknown drug.
Chased by the Togruta Jedi, Fives fled, his aggression and paranoia amplified by a drug Kaminoan scientist Nala Se had secretly administered to him. He eventually arranged a meeting with his superiors, Jedi General Anakin Skywalker and Clone Captain Rex, in a warehouse on Level 1325 so he could plead his case.
When a desperate Fives, believing that no one would listen to the information he had learned about the inhibitor chips, drew his weapon on Fox, he was killed by him, dying in Rex's arms.
The Death of Fives [4K HDR] - Star Wars: The Clone Wars
What were Fives last words?
Fives' last words are "This is the end. Forget the mission. Oh, nightmare. I'm free." Deeply dark and ironic words for an audience that knows Order 66 is still coming.
She hired the bounty hunter Fennec Shand to retrieve Omega and return her safely, but when Lama Su declared that he wanted her to terminate the young clone, Nala Se called off Shand, believing Omega would be safe as long as Lama Su did not have her and agreed to pay the bounty hunter.
When Fox and his troops confronted Fives, he demanded that the ARC trooper surrender to them. Ultimately, Fox opened fire on Fives after the clone raised a blaster at him.
Later, Fives traveled with Ahsoka Tano, Anakin Skywalker, Captain Tarkin, Captain Rex, and Echo to meet with the rest of the group at the rendezvous point. While fighting in the landing area of the citadel, Fives witnessed his close brother and friend, Echo, get shot by a turret.
The first of a small number of individuals to learn about Order 66, Fives discovered the existence of the clone control chips after his friend, the Clone Trooper Tup, began attacking Jedi when his chip malfunctioned.
Echo had been Fives' longtime friend since the day they were cadets. They were the only two surviving Domino Squad members from the Rishi Moon Outpost and were reassigned by Rex to the 501st.
In S6E4 “Orders” of the Clone Wars, ARC Trooper Fives - who had information about Order 66 but was drugged so he wouldn't make sense - was ordered to stand down by clone Commander Fox, who saw Anakin and Rex trapped in a ray shield by Fives. When Fives reached for a gun, Fox shot and killed him.
In the context of the story, Snoke is a "genetic strandcast" created by Emperor Palpatine to serve as his proxy in power. Snoke, whom Abrams called "a powerful figure on the dark side of the Force", was introduced as the leader of the First Order and master to the sequel trilogy's main villain, Kylo Ren.
Palpatine, motivated by pride and a desire to see his homeworld become a part of the greater galaxy, sought to quietly undermine his father's political agenda during the 65 BBY election season. More importantly, however, it was the rift with his father that indirectly led to his future as a Sith.
Fives' discovery already sounded too absurd for anyone to believe, and the fact that Anakin trusted Palpatine so much meant that the clone never had a chance of convincing General Skywalker of what was about to happen.
I just saw someone referencing Fives' last words in an r/askreddit thread. A quick google led me to the exact words: "The mission... The nightmares... They're finally over."
Fox LED the elite Coruscant Guard shock troopers. organized to serve as a military police force. so why is Fox so hated? first of all, he shot one of the most beloved clone troopers in fives.
In fact, Omega specifically was still a person of interest to Imperial researcher Doctor Royce Hemlock, who wanted to capture her to force Kaminoan cloning specialist Nala Se into working for the Empire's secret cloning project on Mount Tantiss.
Season 1 of The Bad Batch saw the Kaminoan Prime Minister Lama Su recruit the bounty hunter Cad Bane to bring Omega back to Kamino, in hopes of using her to resume cloning operations and prove Kamino's worth to the Empire.
After she uncovered a secret recording detailing that the chips might have a hidden purpose, Ahsoka and a group of brave droids were able to remove Rex's chip just in time.
This fact only adds to the tragedy of their plight, since it means they lead far shorter lives than most in the Star Wars galaxy. Despite looking like they're in their twenties, all the clones in The Clone Wars are only ten to thirteen years old.
