From Sonic Retro
Gold Cameron (ゴールドキャメロン) is an enemy that appears in Sonic Heroes. They are found in Power Plant for Team Dark and Chaotix, Casino Park for Team Sonic and Dark, and in Frog Forest for all teams except Team Rose. They appear in all these levels in Super Hard mode, along with Grand Metropolis. In addition, they are present in Robot Carnival (except Team Rose) and Robot Storm (except Team Rose and Chaotix).
It's an upgraded version of the Cameron, with a reinforced golden shell which makes this robot immune to Power Formation attacks. To destroy it, it needs to be flipped over and then the belly must be attacked. It has 6HP and awards 400 points when destroyed.