Template:Fight with the Felines

From OnePiece Fanon Wiki

When the Black Cat pirates came to town, Usopp, along with Monkey D. Luffy, Roronoa Zoro and Nami, fought the pirates and their leader, Captain Kuro. Kuro had been spending three years posing as a caretaker for Kaya so he could set himself up to inherit her fortune. He plotted to kill her without anyone suspecting he was behind it.

After Luffy defeated Kuro and the Black Cat Pirates, Usopp disbands "Usopp's Pirates" and leaves them find their own dreams. He was going on his own way, but Luffy invited him to travel on the Going Merry with him and the rest of his crew. Luffy named him sniper for the crew as he has inherited his father's sharp shooting skills. After joining, he created the flag for the Straw Hat Pirate Crew after Luffy proves unable to draw, and he also paints it on the sail of Going Merry.