The Kaiju from the Mecha Anime, Daitarn 3. The Megaborgs are actually giant versions of the human-sized Meganoids. The Meganoids can turn into Megaborgs, commonly by using a device called a Macro Machine that grows them and changes their bodies for battle purposes.
Sandrake
Neros
Benmel
Des Sander
Brandol
Aneval
Daston
Jira
Mettenger
Wong Law
Hessler
Wenner
Miragloa
Jurabird
Zenoia
Rad
Damdes
Special First
Buncher
DeathSpider
Unnamed Daitarn 3 Kaiju
Radik
Jimmy Dean
Jenoba
Garu
Katroff
Magellan
Mileena
Edwin
Beltori
Lisa Ica
Combined Megaborg
Mazoni
Zeta
PandaBot
Trays
Doil
Jiraiya
Phroid Jaruki Taimer
Kidowa
Blue Bird of Happiness
Kouh Sei
Nendol
Don Zauser