Who is voicing Hattori in Gintama The Final?
According to the answer in Yahoo Chiebukuro, the movie pamphlet has Toshiyuki Morikawa listed as Hattori's character voice. The Wikipedia article also lists him as Hattori. He also plays as Isaburo Sasaki in the same series. Note that Morikawa also replaced Keiji Fujiwara as Hiroshi in Crayon Shin-chan, so this was a natural choice.