Baby Yellow is a fanmade singamajig in the "Singamajigs Babies" Series. She is pastel yellow with purple diamond eyes, the same ears as the hot pink, a silver nose, a rainbow mouth, and a purple shirt with "My Baby Girl" in orange letters on it. She signs on and signs off the same way as the Baby Blue singmamajig and enters song mode by saying "Lullaby!". She is the first singamajig with diamond eyes and she sings "Golden Slumbers." She has the same voice as the mermaid.