Plastic Man?
Nope, it's the outstanding sax artistry of Plas Johnson! Interesting imagery. I bet she never even met him. :p He missed her unique way of keeping doors closed.
I really like this endorsement on the back. It would make a great poster, or even just a straight ad (perhaps in poster form plastered around town) for the album.
Here's a video featuring his playing. I bet you've heard it and didn't know it was him!