Jim in the story play a character resembling achetypal hero who sacrifices for the good of his family.
Explanation:
Jim in the story is represented as a hero who led Huck and the family through all times. He has been portrayed as a man of intelligence and compassion but gullible nature. This nature of his is inferred to his upbringing in a regressive surrounding.
Jim is further represented as superstitious (a reference to his ominous warning of rain when struck on the island) but this superstition is, in turn, his deep understanding of the mother nature. Jim through all twist and turns has acted as a surrogate father to Huck.
He cooks, shelters him, guides him and cares for him. However, Jim remains at the mercy of every other character of the story. Even the tiny Huck threatens him (letter to Miss Watson). He acts as the most matured member of the family and sets an example for others to follow.