Here's a simple test. Without looking at the colored version below, can you tell which clones are which?
And is Lightning Bug in the page?
It's a pretty interesting exercise. Lightning Bug, Sermon and Exaggerator look and act pretty much alike.
From the speech bubble however, it's obvious the one to the far left is Exaggerator, which makes the one on the far right Lightning Bug. Happy-Go-Lucky and Angry are easily recognized because of the speech balloons and the expressions. Anyway, here's the real page.
Just an interesting thing to think about. :)