The childhood nickname for Darth Vader mentioned in this crossword clue is “Ani.”
Ani is a nickname given to Anakin Skywalker, who later turned into Darth Vader in the Star Wars movie franchise. Anakin was born on the planet Tatooine, and after showing his exceptional skills as a pilot and a Jedi, he was taken under the tutelage of Jedi Master Obi-Wan Kenobi.
Anakin Skywalker’s childhood nickname ‘Ani‘ is a shortened version of his full name. Anakin is referred to as Ani by his mother Shmi Skywalker in Star Wars: Episode I – The Phantom Menace.
As an added fun fact, Anakin had a deep connection to his nickname, as it was only used by people he had deep personal connections with, such as his mother, Padmé Amidala, and Ahsoka Tano.
I hope this explanation helped you understand the answer ‘Ani‘ for the childhood nickname of Darth Vader in the crossword clue!