Taobao has these Derpy toys up for sale on one of their random shops. While they are usually a good source for really early toys (The 3rd generation blindbags with colts and Trixie came out early a while back) I’m pretty sure this isn’t real. This site tends to have lots of random clones/prototypes from people that work in the actual factories over there.
Check out the page for it here! It’s actually really well done! Hopefully something like that will be a reality in the future. It looks like you can buy one if you really want to though!