As much as I like shitting on Johncel, that's not helping
>>8687948 get what he needs.
There IS a 1/100 HG Epyon with a segmented whip that you can use. However, that one doesn't use a wire and instead only has hinge joints between segments. If you want it to be fully posable like the one in your pic, you would have to drill a hole through each segment and then feed a wire through them.