The answer to the crossword for the term 'Oompa-Loompas' Creator' is 'Dahl', which refers to the British author Roald Dahl. He is best known for writing children's books such as Charlie and the Chocolate Factory, Matilda, and The BFG. He also wrote several short stories for adults. Dahl was born in Wales in 1916 and died in 1990. He is remembered for his imaginative stories and characters, including the Oompa-Loompas.