Is Usopp's Hammer His Strongest Weapon In One Piece?
Usopp is the comedic relief and unquestionably the most cowardly member of the entire Straw Hat Pirates group in One Piece
Hissatsu Gokiburi Boshi Kuro Kabuto Straw Hat Pirates Ton Hammer Though Usopp Has Four Hammers They Are Not His Most Effective
Source: republicmonews.com