Plas' base is all JLU Elongated Man of course since EM seems to be the only figure with a smile on his face its the only one that would do for Plastic Man.
His hair is sculpted, the goggles came from a JLU Superman variant figure. Plas' cross-stitching and belt were made by using some adhesive pin striping I found at a hobby shop...boy, did that stuff come in handy! Plastic Man got mentioned on the show, but we never saw him, would have been cool to see their take on him.