Ninja: The Final Duel
Ninja the Final Duel (original)
One of the bestest ninja films ever. Not much plot but we have giant spider riding ninjas, tree jumping cat ninja, some good old shaolin chop socky, amazing wire work, a baddie who mainly laughs and disappears, sped up antics, Naked female ninja, underground burrowing ninja and some hilarious dubbing to top it off. All dues go to Robert Tai and the other Taiwanese ninja directors because they make the best ninja films!
Starring Alexander Lo Rei, Li Yi-Min, William Yen Ming-Chang, Wang Hsieh, Wong Chi-Sang, Eugene Thomas, Alan Li Hai-Hsing, Yuk Hin, Silvio Azzolini, Philip So Yuen-Fung
Watch "Ninja: The Final Duel" on Tubi TV released in 1986. It's a action & adventure and crime movie, and has a rating of 5.8 out of 10 from Imdb which is fairly okay for this kind of movie, and is currently available to watch for free.