"Hardhead" is one of these Headmaster characters. He's an Autobot, and his smaller Headmaster partner is named "Duros." When Duros transforms and combines with Hardhead, he forms the head of the larger robot.

If you're referring to a "G1 Retro Release by Hasbro NISP," it sounds like Hasbro may have reissued the original G1 toy, potentially with the same or updated tooling. "NISP" typically means "New In Sealed Package," indicating that the item is brand new and unopened.

The description for such a reissued toy would likely highlight:

1. The retro appeal, potentially indicating that it's based on the original 1980s design.
2. The Headmaster gimmick, emphasizing the transformation of Duros into Hardhead's head.
3. The packaged accessories, if any.
4. The nostalgic packaging, which would be made to resemble the original G1 packaging to attract collectors.

For more specific details, especially nuances in the retro release, one would need to consult the actual product description or reviews from retailers or toy enthusiasts.

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