In Belgium, children receive presents from a figure named Saint Nicholas accompanied by which mischievous companion?

Zwarte Piet (Black Pete)

What is the name of the ghostly Pokémon associated with a haunted music theme? Who led the Indian independence struggle against British rule? Who was the famous leader who founded and unified the Sikh Empire? Who was the Native American leader who organized a multi-tribal confederacy against U.S. expansion in the Great Lakes region in the early 19th century? What's the name of Joey's imaginary space cowboy friend?