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

As you can see Chad is pretty mean, snobby, and is also exceedingly arrogant. His label is "The Spoiled Rich Guy". Although he is an extremely cruel and overall bad person in general, he's not the main antagonist.
Another thing is that he has a look-a-like female partner, who together are the "King and Queen of the class". The popular rich kids who constantly despise the other kids that are either average, cheap, or just not popular. From TDGW

Chad

Annoying and arrogant.