Dwarf refers to a person with one of several varieties of a specific genetic condition called dwarfism. A dwarf has disproportion of body parts. This is generally caused by a genetic or nutritional disability. Any adult human below the height of 4'10 (147 cm) is considered a dwarf.
One Piece has a great story and does not have a lot of filler episodes.
One thing I did not like about this ball that I'll remember forever: the filler was like particle board and I always got blister in my thumb(of course bowling 7-8 games a day didn't help, lol!). Thumb slugs(inserts) were probably not available back then. Didn't know better......