What about using a Nutter Butter cookie dipped in chocolate for the body. and the only thing I can come up with for the legs is chocolate dipped pretzel sticks. Wouldn't hold it up, tho.
Using cake, I would cut a tear drop shape for the body but for the legs--I got nothing! I'll have to think awhile longer.
Wow, that's a tough one!! What is that thing anyway? lol
) from pretzel rods, using royal icing for the glue, the claws I would make ahead of time out of royal also and then glue them on with royal, like my spider see below:
Yikes, that looks scary and something that would show up at the Food Network Challenge. Hope you are charging her an arm and a leg for this!
thanks to everyone for your input so far, this is a tough one to come up with ideas for. I am thinking that I will have to make them from styrofoam and pipe cleaners or something and make them to sit on a cake.
I have done many fbct and icing images so if worse comes to worse I will have to do them and place them around or on a cake 
They are some toy from the Bionicle series - a boy toy of course.
ohhh tough one, it is a bonicle from lego. Do you have to do that bionicle? How about making the cake a bionicle mask
http://shop.lego.com/product.asp?p=M002&cn=12&d=6&t=3
and on the sides you could do edible images of all the different bionicle
http://www.lego.com/eng/bionicle/building.aspx
the above site is how they are actually put together. Hope this helps
Claire
Quote by @%username% on %date%
%body%