I have made the comparison before between Silverstein and Obi Wan.
But there are other contenders.
For a start, there’s the googly eyed resemblance.
Then there’s the fact Admiral Akhbar has the signature line “It’s a trap!” – whereas Silverstein time and again falls for traps and spoofs.
And finally, if Silverstein got his way, we’d all be saying “Allahu Akbar.”
Jar Jar Binks
Again, there’s the resemblance. Both have trouble pronouncing words properly, and both are highly annoying.