Skull from Llama_Goddess's fanfic "Tilikum"
https://href.li/?https://archiveofourown.org/works/40805751/chapters/102246912
This was a traditional art that I posted on my tumblr last year and I decided to finally go through the editing to give it a background. Love this fanfic and I am really happy with this piece still
#UndertaleAU #horrorsans #siren