then that would be creppy and scary! but mostly I think Obi Wan is not gulible as Anakin. it's just like the evil saying to Obi Wan: "come to the dark side, we have cookies! then probobly Obi wan would say: "well I'm not going because maybe your cookies are rotten and filled with poison!"
but Anakin ate the cookies.....
Yes, Obi-wan and Darth Vader fight twice. Once on Mustafar, where Obi-wan was the victor, and once on the Death Star where Darth Vader killed Obi-wan.
Darth Vader's old master was Obi Wan.
Obi-Wan proved that he was better than Darth Vader in The Revenge of the Sith when he defeats Vader when Vader was at his height in power. And the only reason Vader killed him in A New Hope was because Obi-Wan sacrificed himself to help the others escape.
Obi-Wan states to Darth Vader, "If you strike me down, I shall become more powerful than you can possibly imagine."
Obi-Wan Kenobi's body disappears when Darth Vader strikes him down. This is because Obi-Wan has become one with the Force, achieving a state of transcendence known as becoming a Force ghost.
darth vader
Obi Wan
Darth Vader's Master is technically the Emperor when he was a Sith, but when he was training as a Jedi his master was Obi-Wan Kenobi
Obi-Wan had already known that Anakin had 'turned to the dark side' and had become the Dark Lord Darth Vader. (he realized this shortly after he did [see episode III])
No, he does not. Darth Vader's first apprentice (Galen Marek/Starkiller) is killed by Emperor Palpatine/Darth Sidious.
yes
Obi-Wan cut them off in the fight on Mustafar