Baby Dark Blue is a fanmade male singamajig baby, but definately not the last one. He's dark blue with black star eyes, a lime green shirt with "My Baby Boy" on it in pastel red letters, a pink nose, the same ear shape as the New Red singamajig, the same arm pose as the New Yellow  and a red mouth. He has the same voice as the Birthday tenor and same pitch as him while talking is the same as fairy and sings "Rockabye Baby." He signs on by saying "Hi Baby!", enters song mode by saying "Song!", and signs of by saying "Bye bye Baby!"