The incoming Cobra Kai/Power Rangers Lightning Collection will have Skeleputties, who are meant to look like Johnny's skeleton costume from Karate Kid.
Some fans have said they look like the Skeleton Warriors from Mighty Morphin Power Rangers, who assisted Bones.
MegaZeo pointed out these pictures from an unknown source. These were Skeleton/Z-Putties that were cut from the episode "Zedd's Monster Mash." I personally have never heard of these before and it is certainly a deep cut.