Here are pictures of Mr. G1 Megatron. Often cited as the toy that started the entire Transformers toy craze in 1984.
Megatron is very powerful and utterly ruthless. There have been several interpretations of his character; some see Megatron as a strategic leader who calls the shots from afar, whilst others see him as a tactical battlefield commander who leads by brutal example. Unlike many other villains in popular fiction, Megatron was not generally depicted as overly chaotic or insane. He was highly aggressive and a megalomaniac but there was usually a consistent rationale behind his actions, although Megatron was often the only one who could perceive this.