The puzzle itself is easy to make, but the problem is finding Star Wars names that have nine letters and no double-ups (although doubled-up letters might make the puzzle easier).
- Skywalker - nope, two 'K's
- Luke & Leia - nope, two 'L's and two 'E's
- Palpatine - nope, two 'A's and two 'P's
- Darth Maul - nope, two 'A's
- Cloud City - nope, two 'C's
- Death Star - nope, two "A"s
- ...
I've just realised one obvious one (although finding a fitting image might be difficult).
There are also "Super Sudoku" puzzles that use a grid of 4x3 sub-grids, but finding a name to fit that would be even harder.