Here are some shots of the Tengas.
Tengas are an American creation so any time you see them it's new footage.

 




For additional information in regards to the Gasha Skull (Rito) footage that was used not only in KakuRanger Episode 24 but also in Episode 30 and 31 (30 and 31 being where most of the Giant Rito Kaku shots is taken from) as well as other information in regards to those 3 KakuRanger Episodes please see the following link: Kaku 24, 30 and 31