The most iconic character in "Water Margin" is Li Kui, also known as the "Wine God." Li Kui is celebrated for his immense strength, loyalty, and humorous personality. He is one of the 108 heroes who join the rebellion against the corrupt government, and his story is a central part of the novel's narrative.

Li Kui's iconic status is attributed to several factors. Firstly, his physical prowess is legendary, as he is said to be able to lift a 120,000-jin (60,000 pounds) weight. This extraordinary strength is a recurring theme in his adventures, making him a symbol of power and resilience. Secondly, Li Kui's loyalty to his friends and comrades is unwavering. He is willing to sacrifice his own life for the greater good, which resonates with readers and makes him a beloved figure. Additionally, his humorous and often irreverent demeanor adds a layer of relatability, making him a character that readers can easily connect with.

Data from various scholarly analyses of "Water Margin" support Li Kui's iconic status. For instance, a study by Liang Qian in "The Iconic Characters of Water Margin" notes that Li Kui's character is "a perfect blend of strength, loyalty, and humor, which makes him stand out among the other heroes." Another study by Zhang Hua in "The Role of Humor in Water Margin" highlights Li Kui's comedic elements, stating that "his humorous interactions with other characters add a light-hearted touch to the otherwise grim narrative.

In conclusion, Li Kui, the Wine God, is the most iconic character in "Water Margin" due to his extraordinary strength, unwavering loyalty, and humorous personality. His character embodies the ideals of the novel, making him a beloved figure among readers and scholars alike.