The TV anime was licensed by Central Park Media under their Software Sculptors label in 1995, and was released on subtitled VHS.
Four soldiers (Shinobu Fujiwara, Sara Yuki, Masato Shikibu and Ryo Shiba) pilot the mecha Dancouga and fight to liberate portions of Earth from alien invaders known as the Muge Zorbados Empire.
The mecha began as four vehicles which could transform into animals (an eagle, cougar, tiger and mammoth, respectively) and humanoid robots before combining to form Dancouga.
Many of the Dancouga story elements revolve around religion (primarily Christianity, although the series also borrows from Taoist philosophy) and music.
Triggering this mode utilizes the Aggressive System, which activates automatically when the pilot reaches a certain level of anger.