Boba Fett appears in the short story "Prey" along with Darth Vader. Fett even uses a lightsaber against Vader!
Published March 2002.
Story and art for "Prey" by Kia Asamiya. Colors for "Prey" by Dave Stewart. Letters for "Prey" by Steve Dutro.
From the publisher:
It can't be easy being Han Solo...one minute he's winning the Millennium Falcon from his buddy Lando, the next he's being chased across the galaxy by Boba Fett and running afoul of Darth Vader. It seems like Han is always getting into trouble, but it's nothing a resourceful guy like Solo can't handle. This issue of Star Wars Tales puts the spotlight on Mr. Solo featuring various adventures, including a rare "young Han Solo" tale by Jan Duursema! Adventure and mayhem abound in issue #11 of Star Wars Tales!
"What's the matter? Surprised to see a lowly bounty hunter wielding such a fine and noble weapon? You're not the only one who's killed Jedi!" — Boba Fett