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

youtube.com/activate is a channel owned by YouTube. It is currently the most subscribed channel without any videos published. The youtube.com/activate link is a way to connect to other devices. You have to put a code which is displayed on a device, log in to your Google account, and you have YouTube on a device. It didn't mention the YouTube account, so it's unknown how they got subscribers. 

youtube-com-activate

American, Website Username, Mysterious, No Videos.