Bag Guy

The Bag Guy is a character from.

Biography
The Bag Guy appears in the Item Shop of Thieve's Town. He stands in the corner of the shop with no particular purpose, singing to himself a part of the song required to enter the Thieves' Hideout: “''♪ Sometimes it hurts too much t'care. Ya think knowledge is power, but it's really despair...''”.

Trivia

 * It's possible that the Bag Guy is a Masked Follower, with the bag over his head being his mask. On the other hand, it could be to conceal his identity as a thief, or a meaningless and random design choice.