The masked villain is a powerful trope. There's always something sinister about someone who won't show you their face. So play it up for all it's worth. If you've never had one of your bad guys wear a mask, consider it for next time.

Transcript

GM: A masked figure appears behind Vader.
Leia: What is it with the masks?
Han: Oh my god, he's hiding a goatee.
Boba Fett: Hello. My name is Boba Fett, adopted son of Jango Fett, who was slain during the Silence of the Clones.
Boba Fett: {voice over flashback} "Jango worked for my true father, Darth Maul, who was slain by a Jedi named Obi-Wan Kenobi."
Boba Fett: {voice over} "Jango sought vengeance against Kenobi by financing a clone army to resurrect the Trade Federation."
Leia: He bought an entire army and plunged the Galaxy into war, over one person?
Han: Why not just shoot him?
Boba Fett: I know, right?