Zed is a supporting character in the Ratchet & Clank movie and Ratchet & Clank: Life of Pie and a minor antagonist in the Ratchet & Clank 2016 re-imagined game (which is based on the movie). He is a small service robot who worked as Chairman Drek's attendant until he was captured by the Galactic Rangers and had to team up with them to stop Dr. Nefarious from destroying the entire solar system. Later, presumably bored, he joins Nefarious as his new assistant.
Ratchet & Clank (2016 movie)
Zed is first seen accompanying Chairman Drek on both the Deplanetizer and on Quartu, heading to Quartu when the Galactic Rangers attacked. When Clank infiltrated the factory, Zed attempted to lay down traps and sent Chompers and warbots to stop Clank from progressing further into the factory, until Clank eventually cornered him into a container and activated Zed's computer to disable the factory's security. Zed returned to Drek's office, and later instructed Zed to unleash the Mr. Zurkon's.
Drek escaped Quartu in a shuttle, leaving Zed behind (and telling him he was now out of a job), for the Galactic Rangers to interrogate him. Cora Veralux eventually threatened to drop him off a ledge, and she briefly did so to force him to reveal Drek's next target, Novalis. He was then placed in a prison cell on board the Starship Phoenix. When Clank defeated Victor Von Ion in front of him, Zed asked if he could switch sides.
Zed later helped Grimroth Razz and the Rangers install Mag Boosters into their class-g Star Jumpers, and explained how Dr. Nefarious would betray Drek and the blarg, attempting to destroy the entire galaxy by blowing up Umbris' unstable core. Zed would later go on to become Grim's assistant.
Ratchet & Clank (2016 game)
In the game, that tells the same story of the movie but with some differences, after Nefarious's defeat, Zed appeared as Captain Qwark's cellmate and personal butler in prison.
During Qwark's flashback he's shown trying to stop Clank from disactivating the factory's security but he gets cornered into a cointaner and fails. Even though he frees himself eventually he doesn't make it in time to escape with the others and gets captured and interrogated by the Rangers. While in the movie he helps the Rangers to defeat Drek and Nefarious in the game he's never seen again in the story told by Qwark after this which means that here he just got arrested and brought to the authorities.
Life of Pie
In the pilot, Zed was instead now working for Nefarious, who actually survived the destruction of the Deplanetizer, presenting his new invention: The Portalizer. This device can allow to people to travel through other dimensions, and Nefarious intended to use it to rule all the dimensions.
However, the Portalizer was stolen by Ratchet and Clank, and Nefarious gets so upset that he glitched, triggering dialogue from an episode of Lance and Janice. Zed slapped him to unfreeze him, and later Nefarious attacks Aleero City and gets his Portalizer back while Zed takes the promotional cartonic Qwark.
When Nefarious captures Ratchet, the Lombax, to have more time, says that he would like to see some more of his evil inventions Nefarious asks Zed to show the other inventions to which he obedies nervously.
After Nefarious's defeat and the Portalizer being put in safety in a museum by Ratchet and Clank, the doctor is once again glitched so Zed prepares to slap him to unfroze him but the Warbots stop him taking this as an opportunity to slap repeatedly their boss. Zed let them doing it and has some fun.
Zed is a small flying robot with a single yellow eye in the form of a visor and two arms, with his paint resembling a butler. He is apparently incompetent and given little respect by Drek, who left him at the first opportunity. He tends to talk too much, which annoys others, much less Drek. Even though he's seen serving Drek and even after his redemption Dr. Nefarious, he's mainly neutral and doesn't really show any sign of evil when he's working.