Live action TV
Description
Joshua Joyce is the founder and CEO of Kinetic Solutions Incorporated, a high-tech corporation that rose to prominence in the years following the Battle of Chicago. As a brilliant and determined inventor, his childhood dream was to use technology to make the world a better place, but this ambition led him down a morally questionable path.

Joyce is characterized by his arrogance and his strict, demanding nature as an employer. He is a visionary whose narrow focus on scientific progress often blinds him to the ethical consequences of his actions. He presents himself as a smug and confident executive, believing that his creations represent the pinnacle of technological achievement. However, beneath this confident exterior, he is also something of a coward, known to panic and complain when faced with danger, especially during the battles in Hong Kong. Despite his flaws, he is not truly malevolent; he is horrified when his prototype, Galvatron, kills innocent civilians, showing that he has a moral compass that distinguishes him from his more ruthless ally, Harold Attinger.

His primary motivation is to secure humanity's future by creating a line of man-made, remote-controlled Transformers that would serve global defense forces, rendering the independent Autobots obsolete. To achieve this, he partnered with the rogue CIA operative Harold Attinger and his unit, Cemetery Wind. Under this arrangement, Cemetery Wind hunted and killed Transformers, providing their remains to KSI. Joyce believed he was receiving only the bodies of evil Decepticons, ignoring evidence that heroic Autobots were also being slaughtered. He developed a programmable, shape-shifting metal from these remains, which he named Transformium. His ultimate goal was to acquire a Seed, a device that could generate massive quantities of Transformium, enough for a century of production, which he planned to detonate in a remote location like the Gobi Desert.

In the story, Joyce serves as a secondary antagonist who is ultimately a pawn in a larger game. He is the head of KSI, where the Autobots confront him over the desecration of their fallen comrades. He proudly unleashes his prototype, Galvatron, to eliminate Optimus Prime, only to lose control when the prototype reveals it has a mind of its own—the reawakened essence of Megatron. After this event, he begins his transition from antagonist to reluctant ally. Heeding a warning from the inventor Cade Yeager, he turns against Attinger and attempts to flee with the Seed. Now hunted by both Cemetery Wind and his own out-of-control Decepticon army, he joins forces with the Autobots to survive.

Joyce's key relationships define his arc. He starts as a business partner to Harold Attinger, but Attinger views him only as a disposable asset and a "golden parachute," a truth that becomes apparent when Joyce tries to back out of their deal. He treats the captive Autobot Brains as a slave, forcing him to work on the KSI drones and torturing him for dissent. He views Optimus Prime and the Autobots as obsolete junk, leading to a tense antagonism. Finally, his brief phone conversation with Cade Yeager, who appeals to his conscience as an inventor, is the catalyst for his change of heart.

Over the course of the film, Joyce undergoes significant development. He begins as a man so consumed by his grand vision that he is willing to cut moral corners. His arrogance is demonstrated when he smugly tells Optimus Prime that humanity no longer needs his kind. As his creations spiral out of his control and Attinger reveals his true, ruthless nature, Joyce is forced to confront the consequences of his actions. He transforms from an antagonist into a fearful, but ultimately helpful, ally. By the end of the conflict, he is redeemed, having survived by fighting alongside his former enemies. As a gesture of gratitude and remorse, he promises to help Cade Yeager and his family rebuild their lives.

While he possesses no physical abilities in combat, where he is often helpless, Joyce's notable abilities lie in his intellect. He is a genius-level inventor and a savvy businessman who successfully reverse-engineered the complex metallurgy of the Transformers, creating the programmable substance, Transformium. His scientific achievement allows him to build an army of powerful, synthetic Transformers, though his inability to anticipate their sentience reveals the critical flaw of his arrogance.