Gold Cameron
From Sonic Retro
Gold Cameron (ゴールドキャメロン) is an enemy that appears in Sonic Heroes and part of the E-Series. They are found in Power Plant, except for Team Sonic and Rose, which has them replaced with regular Camerons, and in Casino Park for all teams except Team Rose.
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.