I think these robots are not all from the same franchise. I was only able to ID two of them. They are all Korean bootleg toys.
They were packaged with little sticker cards, but none of them match up to any of the toys haha. They all stand at about 4.5cm. Made of a soft bendy rubber. Any help IDing the characters would be greatly appreciated :-)
1. Hyoryu from King of Braves GaoGaiGar
2. NO IDEA
3. NO IDEA
4. NO IDEA
5. NO IDEA
6. EnRyu from King of Braves GaoGaiGar