Boston is a recruitable character from Romancing SaGa 3. He is one of the lobsters living on Limit Island, asking to join the party so that he can travel the world.
Boston starts with no equipment at all, you cannot equip weapons or armor on him (his carapace serves as his armor), though you can equip rings on him. To compensate for these, he is the strongest melee fighter in the game, his punch alone capable of dealing 4-digit damage easily. He is also immune to water magic and a good water magic-user.