Original: In an interview, PokÃ mon Diamond and Pearl director Junichi Masuda noted Lucario's name as one of the most difficult to create, due to an effort to make it appealing to both Japanese and American audiences.
Simplified: In an interview with PokÃ mon Diamond and Pearl director Junichi Masuda, he noted Lucario's name as one of the hardest to make, because they wanted to make it work for both the Japanese and Americans.