The Cook

 The Cook is a victim of the S.S. Pequod's crash.

Role In S.O.S Island
The cook was perfectly fine, till the Captain rammed the ship into an iceberg. While he was getting some vegetables in the freezer, the ship crashed trapping him and freezing him in the process. Sometime later, help comes and you find him in a block of ice. You then push him into the oven to thaw him out. He then tells you to save the Captain. After that, he still offers to cook.

Trivia

 * He was frozen along with a tomato, an orange and a head of lettuce.
 * According to the Poptropica Tips and Tricks app,his name is Flask.
 * He has the same name as the third mate in the book Moby Dick.