BackGround Story of Penta PentaGram Penta Pentagram is a 12 year old girl trapped underground since she was 3. Her real name is Mari Tennon. She is a human but since she was down in Snowdin so long, her so called father or as you know him as W.D. Gaster gave her his determination before his mistake. So Penta’s new family is Sans Skeleton and Papyrus Skeleton. When Gaster gave her his determination, her one eye turned into a pentagram. And that's when she got the name Penta Pentagram. Penta has color changing hair (But her color is usually black), with a part of her hair covering the pentagram eye, her other eye is purple (a symbol of Orange and blue or Sans and Papyrus), she has fangs (the canines teeth),she wears a black body suit with a black sword (the sword of Black Magic).