Kate's imaginary siblings

"Kate's imaginary siblings" is not an official name.

Kate's imaginary siblings
Age	Newborns
Gender	Unknown
Animal	Aardvarks
Eye color	Black
Hair color	Bald
Complexion	Brown, tan, off-white
Residence	Arthur's House, Elwood City
Family	Jane Read (mother) David Read (father) Arthur Read (brother) D.W. Read (sister) Kate Read (sister) Each other (siblings)
Cartoon debut	"Arthur's Baby (episode)"

Kate's imaginary siblings are nine babies that Arthur Read imagines in the episode "Arthur's Baby."

Physical appearance

All of them wear shirts, diapers, and shoes. One is pale and wears a yellow shirt, one is brown and wears a lilac shirt, one is tan and wears a white shirt and shoes, one is tan and wears a white shirt and seafoam shoes, one is brown and wears a pink shirt and lilac shoes, two are off-white and wear lilac shirts and shoes, one is tan and wears a yellow shirt and seafoam shoes, and one is pale and wears a red shirt and white shoes.

Biography

When Jane Read is pregnant, Arthur wonders if she is carrying multiple babies. He then imagines himself sitting with Kate on his lap, only for more babies to fill the room, crying, making him cry himself.