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.
Part 2 of the anime series has had 138 fillers out of the 385 episodes broadcast so far. In total 38% of the episodes of the episodes have so far been fillers. In total, the Naruto and Naruto Shippuden filler list is made of 228 episodes, which are fillers.