Sid and Ed are twin Pachycepholsauruses from the Swazzle puppet show, Harry and the Tyrannosaurus Rex. Immediately after hatching they begin bickering, and trying to one-up each other. Ed is pretty dumb, and Sid isn't much smarter. At the start of the show they meet Harry, and they taunt and tease him relentlessly.
Sid and Ed are rod puppets. They were designed by Patrick Johnson, and built by Sean Johnson. Sid and Ed are performed by Tim Sweeney, and Sean Johnson.