The Great Garloo was a robot monster from the Marx company. In addition to looking cool, it stood about two feet tall, and had the (wired) remote-control capabilities of moving, bending over, and picking things up, making this a very popular toy in the early 1960s.
Garloo was green and scaly, with a ridge of spikes on its head. Its mouth was open, showing its teeth. It wore a leopard-print loin cloth and chains. Its posture was reminiscent of a Ray Harryhausen character.
The toy spawned a "Son of Garloo" wind-up version.
Forty years later, it is still a popular collector's item.