I’m working on a diorama involving graboids, shriekers, and Ass-Blaster. I would love to have some proper dimensions of them if possible.

Not much of that information gets saved, but creature designer Alec Gillis has kindly provided this response from memory:

Graboid- full length 20 feet. The black head shell/carapace measured 3 feet from tip of nose to start of neck hide.

Shriekers- stood about 4 feet tall at the highest point, which is normally the hip bone. . Using that measurement one could extrapolate from photos the body length from tip of nose to end of tail.

Ass Blasters- about 6 feet from tip of nose to end of tail.

Hope this helps!

I’m working on a diorama involving graboids, shriekers, and Ass-Blaster. I would love to have some proper dimensions of them if possible. was last modified: December 22nd, 2025 by S.S. Wilson

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