THE BAT WOMAN (1968)
The trailer for 1968’s THE BAT WOMAN (aka LA MUJER MURCIÉLAGO). Directed by René Cardona, written by Alfredo Salazar (uncredited based on a character created by Bill Finger and Bob Kane). The film stars Maura Monti, Roberto Cañedo, Héctor Godoy, David Silva, Crox Alvarado, and Armando Silvestre.
The plot summary is as follows:
Batwoman is called to investigate a whacked-out scientist who is capturing wrestlers and using their spinal fluid to create a Gill Man.
As of this writing, THE BAT WOMAN is currently streaming on Night Flight Plus, but it is not available for digital rent/purchase.

