Zoey

Marie

Ignacio

Galen

Ollie

Tala

Quinn

Bodie

Teacher

British

Vampire Bodyguard

Francis

Woman

Bodyguard

The Narrator

African lady

Soft Bubbly

Southern

Robot

Hailey

French

Hood

Indian Girl Accent

A French Girl

Male Russian Accent

Irish

is a character that appeared in "The worst lie Mickey Mouse has ever told". They do not speak, and are only used to represent things Cary is talking about alongside X. They seem to be drooling, while asleep.
Trivia
Y might be an Algebralian, or more specifically, a variable due to them resembling one and appearing alongside X. However there is a message telling BFDI fans (or "Bozos" as the mesage reads) not to say it is canon to the BFDI universe on the BFDI Wiki.
An Algabralian also going by Y 

Y Carykh 