Jancey makes a cameo at the beginning of "Tripped!", where she is seen getting fashion advice from Leni.
She has a muscular body, with light fair skin, a pointy nose, two pairs of eyelashes, short wavy blonde hair, white pearl earrings, a white bracelet on her left hand, and red lipstick. She wears a white sleeveless shirt, with poofy brown shorts, a brown belt, a pink sweater tied around her shoulders, and white high heeled shoes.
Her earrings look similar to Carlota's, only white instead of gold.
Just like how Rita is the mother/wife of the Louds and she is the only Loud who's name doesn't begin with "L", Jancey is the mother/wife of the Yates' and she is the only Yates who's first name doesn't begin with "B".