I love transformers! i grew up watching the cartoons and collecting the toys. It's a part of my childhood. ^_^
Recently when I was watching a youtube clip on transformers, I spotted Perceptor, an Autobot having a Decepticon emblem on his chest.
Here's the clip, see for yourself. If you are impatient, you may forward to the 3:18 mark to see it. On the same clip, before 3:18, Perceptor was spotting the Autobot emblem as what it should be. Guess the animator