Batman Ninja
aka ニンジャバットマン
2018
Written by Kazuki Nakashima
English version written by Leo Chu and Eric S. Garcia
Directed by Junpei Mizusaki
Batman Ninja, what the heck? You could have been so good, but you are just a beautiful mess that spends too much time being boring before getting to the good stuff. We are now in the reality where a film involving Batman villains piloting a giant combining mech is boring. This is truly the darkest timeline! Batman Ninja has two versions, one in Japanese with English subtitles, and one with an English dub. The English version has a bunch of extra dialogue not in the Japanese version (but since the original subtitles are just a transcript of the English version, there are subtitles that display when no character is speaking, and when they do talk some of what they say is different!) Most of the extra dialogue is just expository and explains things that are readily obvious to anyone paying the slightest attention.
Noted Batman villain Gorilla Grodd (wait, what???) builds a time machine device at Arkham Asylum and suddenly all the criminals of Gotham City are blasted to the past of ancient Japan. Batman soon pops up there as well, but what was seconds between jumps in his time turns out to be two years after the rest of the criminals arrived, and now Joker is a lord who controls a stable of samurai who wear his visage as masks. The rest of the criminals have also ran wild. It’s the warring states period and we get a bit of a history lesson as Catwoman explains to Batman which criminals are in charge of which states in their quests to unify Japan. Don’t worry, Alfred and the Batmobile are also back in time (okay, at this point things are so bonkers why didn’t they just make this an Elseworlds-style story set in Japan instead of this time travel stuff? At least with that we could get right to the story and have less setup!)