Fett is the "next major villain" after Darth Vader (James Earl Jones/David Prowse) in The Empire Strikes Back. Fett tracks the Millennium Falcon to Cloud City, where Vader captures its passengers and tortures its captain, Han Solo (Harrison Ford). Wanting to collect a bounty on Solo from Jabba the Hutt, Fett confronts Vader about whether Solo will survive. Vader's decision not to elevate the confrontation marks the only time a character other than Emperor Palpatine makes Vader "quail".
Fett is at Jabba's palace in Star Wars Episode VI: Return of the Jedi (1983) when Solo's rescuers are captured, and he travels on Jabba's sail barge to the sarlacc pit, where the prisoners are to be executed. He attempts to intervene when the prisoners mount an escape, but Solo accidentally activates Fett's rocket pack, sending the bounty hunter crashing into Jabba's ship and tumbling into the Sarlacc's mouth, supposedly to his death...
Fett appears in a scene added to the Special Edition version of Star Wars Episode IV: A New Hope (1997), appearing briefly outside the Millennium Falcon with Jabba the Hutt. Fett was added to several scenes altered for Return of the Jedi Special Edition (1997).
In Attack of the Clones, Boba Fett (Daniel Logan) is a child clone of bounty hunter Jango Fett (Temuera Morrison), who is raising Boba as a son. Boba helps the bounty hunter escape from Obi-Wan Kenobi (Ewan McGregor), but later witnesses Jango's decapitation by Mace Windu (Samuel L. Jackson)
