Sanda (サンダ), sometimes just called the Brown Gargantua, is a giant humanoid monster that appeared in the 1966 Toho film War of the Gargantuas.
Sanda looks like a giant human covered in brown fur. He is 30 meters tall and weighs 15,000 tons.
Sanda was spawned by Frankenstein's Monster when some of his cells were left behind in a Japanese mountain range and grew into an entire body. Sanda was raised at a human research institute when he was young and was treated very well, leading him to see humans as his friends. He eventually escaped from the institute as he grew bigger and remained in solitude in the mountains.