Duke Decapod

Notes:

 * Timed Spawn every hour around F-4 and G-4 in the river.
 * Casts Water every few seconds

(see testimonials)

Historical Background
Decapods or Decapoda, meaning "ten-footed," are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crayfish, crabs, lobsters, prawns and shrimp. Note though that Final Fantasy XI's crabs are quadrupedal, making this name ironic.