Your question cannot be answered with the information currently available.
"More Famous" is too idiomatic to provide an adequate answer without poll data from various areas & age groups, perhaps even from different socio economic groups.
Without any data of this sort there is no way to really determine which person is more widely known to the general populace therefore any answer would really be speculation, opinion and/or conjecture from the individual who answered.
If by overall you mean worldwide, the answer would definitely be Boba Fett
Bart Simpson is famous
Barney
goku
mario
Worldwide is definitely Chewbacca. Barney the Dinosaur is only known in the USA
Princess Leia is more famous. Star Wars is famous worldwide while Barney the Dinosaur is only known in the United States
Definitely Jabba the Hutt since Barney the Dinosaur is only known in the USA
sonic the hedgehog
Yogi has more Google results.
They are both just as famous as each other
Spider-Man is more famous. He has been around for many more decades than Barney and is still wildly popular.
I think Darth Vader would be more popular than Danny the dinosaur.
lady gaga because she has millions of pounds and barney has bearly 50 pounds