Other mistake: Episode 13-12: "Shadow (2)." When Cruger is challenged to defeat 100 robots, a red countdown meter appears on the screen, ticking down each time Cruger dispatches an opponent. When the counter is at 21, Cruger slices his sword at a robot, which then goes down. But the counter stays at 21 and only goes to 22 when he slices at the next robot. Every robot in the sequence goes down after a single hit from Cruger's sword.
Other mistake: In one episode of Power Rangers Dino Thunder, Ethan is seen playing a game on a computer, Connor comes in and Ethan looks away from the computer to talk to him. The game Ethan was playing is still going, but Ethan has stopped playing, obviously a demo.
Other mistake: In various episodes we see Alpha working in the command centre. When we see him pressing buttons however, they are almost always the same buttons being pressed, regardless of the intent.
Answer: According to the IMDB, there are currently 10 different series (with an 11th premiering in 2006). And, as far as I can tell, there have been only two theatrically released movies. All of the series, with the exception of the first one (that premiered back in '93) are spin-offs of the original, and they all share similar plot lines, characters, etc.
Cubs Fan ★