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

Caillou is shown to be a caring, adventurous, helpful. imaginative 4-year old child. Overall he constantly asks questions about the world around him and is always ready for another adventure. In several earlier episodes, (such as Caillou's Cross Word and Caillou Joins the Circus) the character misbehaves or gets upset when things don't go his way; however by season 4, an older Caillou's personality was redesigned to be less negative in behavior, this is addressed by the colour of his shirt.

Caillou

Caillou is a 4-year old boy!