What kind of person is Santiago, the hero in The Old Man and the Sea?

Santiago, an old fisherman, is the last tragic hero created by Hemingway, and also the final summary of the tough guy character created by him all his life. Santiago is a poor and unfortunate old fisherman. His fate is tragic, but he is also a failed hero and an "unbeaten loser". Hemingway's tough guy character is attached to Santiago like an elf, which is a symbol of Hemingway's "tough guy" spirit. Whether intentionally or unintentionally, he is a powerful embodiment of Hemingway's iceberg principle.