So, you don't know who's Oswald? Well, Oswald was called the lucky rabbit because of the idea of rabbits' feet being lucky. In his cartoons, Oswald would pull off his own foot, rub it for luck, and then put it back. Oswald the lucky rabbit was forgotten because he came before mickey mouse and Walt Disney was not allowed to make Oswald cartoons any more because universal and Charles Mintz took Oswald away. It was only after he lost control of the character during a legal dispute in 1928 that Disney morphed Oswald into the character that came to be known as Mickey Mouse. He's also Mickey Mouse's old brother.
You may search if you want TvT cuz I'm lazy-