>>538366280
yellow and blue bird character in the DR library is an ungonered version of the giant head gaster follower from undertale, which had no nongoner counterpart. in chapter 1 their dialogue is slightly quirky but it can be passed off as a joke (they talk about the books upstairs, the books upstairs). in chapter 2, they're found upstairs and still talking about the books upstairs, the books upstairs but as there's not much reason to suspect them of anything they still seem innocuous. they aren't available in chapter 3 (all dark world). in chapter 4, they can be found both in the library and temporarily and semi-secretly by the lake, still talking about the books upstairs, this time obviously incoherent and dysfunctional and telling you to 'wait'. no characters comment on it and it's really really good