The original Tigerhawk toy had a helmet-thing that could come down on his beast mode head, That didn’t make onto the show model, which turned it into a crest/crown thing. AotP Razorclaw features some different tooling on beast mode which gives him something closer to that full helmet look In beast mode.What hat?
Edit: I might be looking at it wrong. It might be the same sculpt as United Tigerhawk with the head fully painted to replicate that helmet look rather than any alternate tooling.