Who is more famous Sonic the Hedgehog or Barack Obama?

Answer 1

Sonic the Hedgehog is a fictional character from a video game, whereas Barack Obama is the President of the United States. Not everyone plays or has access to video games, and besides, video game characters are not necessarily popular for more than a few years; but all over the world, people do know about America and who our president is; thus, it would be safe to say that more people world-wide have heard of Barack Obama than about Sonic the Hedgehog.

Answer 2

Your question cannot be answered with the information currently available.

"More Famous" is too idiomatic for anyone 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.