Captain Rex of Star Wars: The Clone Wars and Star Wars Rebels may not be the soldier Star Wars: Episode VI – Return of the Jedi after all.
While the Clone Troopers became pivotal story players in The Clone Wars and was later revisited in Rebels with the introduction of Captain Rex, not much is known as to what happened to them during the events of the original trilogy, so when Steven Melching, a writer for Star Wars Rebels seemingly tweeted a confirmation that Rex could have appeared in Return of the Jedi, fans were naturally thrilled of the connection as some sort of Easter egg.
As part of the well-trained Clone Army in The Clone Wars, Captain Rex was a great companion to the Jedi until Order 66 was executed.
This was, however, eventually debunked as the real name of the anthology film character was revealed to be Davits Draven.