In the Lullabyroom.mp4 video of the ARG people are theorizing that the secret new hidden character is the bigger body initiative of Bobby Bearhug or is a new character that we haven't seen before. And also people are also theorizing that it's a new Huggy Wuggy type of character which to me in my opinion is not the case. I don't think that it's a new Huggy Wuggy type of character, I think this might be the bigger body initiative of Bobby Bearhug or a prototype version of Huggy Wuggy. In the picture of Bobby Bearhug, her bigger body version looks a lot like the toy version of the smiling critters. Another theory is that there is going to be a prototype version of Huggy Wuggy, which makes sense if analyzing the picture. If you look at it the face, body, hands, and feet are yellow and covered in what appears to be a reddish like fur color in the image, while the mouth and tie appears to be blue which is very different to Huggy Wuggy's design. The design appears to be like one of those chimpanzee monkeys or orangutan monkeys, which makes sense because the two characters are two different characters and the prototype version of Huggy Wuggy seems to be like one of those failed experimentation's that we have not seen in one of the chapters. No one knows for sure but we will have to wait for some real confirmation from the devs.