War of the Gargantuas

(1966)

91 minutes

Original title of "Furankenshutain no kaijû: Sanda tai Gaira"

Horror

Directed by Ishirō Honda

Cast:

Russ Tamblyn as Dr. Paul Stewart 
Kumi Mizuno as Akemi 
Kenji Sahara as Dr. Yuzo Majida 
Nobuo Nakamura as Dr. Kita 
Jun Tazaki as General 
Hisaya Itô as Police Chief 
Yoshifumi Tajima as Police Officer 
Ren Yamamoto as Sailor 
Kipp Hamilton as Singer 
Kôzô Nomura as General's Aide 
Nadao Kirino as Soldier 
Shôichi Hirose as Soldier 
Tadashi Okabe as Defiant Reporter 
Kôji Uno as Dumb Reporter 
Ikio Sawamura as Fisherman 

War of the Gargantuas trailer 

A gargantua is an animal being tested in the lab that flees from the lab and is believed to be the animal on a massive killing spree . The film takes a turn when the vicious gargantuan beast and the one from the lab encounter one another and begin to fight in Japan.