What is cool about Tails Doll? Why is the doll scary? Was this made up because the doll was seen from the 1999 game "Sonic Adventure" and it was frighten?

I'm asking this because I'm curious. Plus I don't seen nothing scary about Tails Doll. Not even Những truyện rùng rợn kinh dị hoặc other horror phim chiếu rạp depend on what it is.