Disclaimer: tortoise in these images participated in the cosplay session on its own free will.
This was one of those minimalistic effort cosplays.
Used hair bands(not sure whom they belonged to, lot's of tangled red hair tho), a balloon, and I'm not sure what's with the nunchucks.
They seemed kinda realistic, like tiny realistic nunchucks. Pfft.
The greyscale is a zbrush screengrab. This model is avaliable on author's gumroad and his artstation store in couple variants. If you're interested just google damir g martin gumroad/artstation.