The top hat character might refer to Luffy. He often wears a straw hat, which could be considered a form of top hat in the One Piece universe.
I think the top hat character you're thinking of could be Shanks. His red hair and distinctive hat make him quite recognizable. However, there are other characters who might fit that description depending on your perspective.
Chapter 8, "Is He Shameless?", is the clearest early answer because it turns Mrs's situation into a concrete plot event.
Chapter 234, "Chasing Wind Youth", is the clearest early answer because it turns Chasing Wind Youth's situation into a concrete plot event. The chapter gives readers a real answer by opening on Given the vast mystical powers Jiang Li had displayed before, he was...
Chapter 348, "Zhu Ling in Dire Straits, Eight Camps Martial Contest, Betting Five Years—East Ridge Has Fallen!", is the clearest early answer because it turns Beining Mountain's situation into a concrete plot event. It opens with If you defend or attack the stage successfully, you can earn one... and closes on This only made Zhu Tong angrier..
Chapter 341, "Moao's Nine Garrisons, the Inspection System and Zhenyu, Li Hu and Hong Yuru (Part 4)", is the clearest early answer because it turns Zhu Tong's situation into a concrete plot event. It opens with After explaining the general situation he had seen, Lu Yang's brows... and closes on None of them had been to Beishuo before, and it was unlikely that He....
Chapter 60, "The Human Oil King", is the clearest early answer because it turns Seeing Jiang Li's situation into a concrete plot event. The chapter gives readers a real answer by opening on What's with Jiang Yan, treating his own sister Jiang Li like this?"...
Chapter 31, "Master, I've been having some bad luck lately!", is the clearest early answer because it turns Jiang Shi Xu's situation into a concrete plot event. The chapter gives readers a real answer by opening on Before Shen Lan had reached the backyard, she already heard the...
Chapter 350, "The Male Lead Actually Came Out to Clear Jiang Li's Name?!", is the clearest early answer because it turns Luo Xingmu's situation into a concrete plot event. The chapter gives readers a real answer by opening on The criticism on Weibo continued to ferment.
Chapter 348, "Schemes and Counter-Schemes, the Five of East Ridge, Zhu Yang's Threat, The Dust Settles (Part 6)", is the clearest early answer because it turns East Ridge's situation into a concrete plot event. Early on, Lu Yang thought of something and laughed, "Besides, I remember that.... By the end, Actually, Lu Yang already knew the answer without waiting for Zhu....
Chapter 45, "Give a Sweet Date and Then a Slap", is the clearest early answer because it turns Sweet Date's situation into a concrete plot event. The chapter gives readers a real answer by opening on Helplessly, Jiang Yan had no choice but to step on the accelerator.
Chapter 55, "I Can Prove Everything Miss Jiang Said Is True!", is the clearest early answer because it turns Director Sun's situation into a concrete plot event.