I don't know what the joke is behind invisible sentinal, but that figure kicks ###!

This was the first test run with Clear Plastics. They wanted to test it before they came out with the Sinistro giant figure.

The FIRST april fools joke here was a new sentinal was coming out.

I remember a funny guy who liked the Riddler. Jack Anderson, or Jasper Son, or something like that. I believe he was President at one time. Then he was eaten by a Dolphin that had a weird resemblance to Mitch Gorshin.

Yeah he did disappear...