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

The connection between the zombies and Christoff's halo are implied to stem from the "dissonant reality" experiments from the titular Project Nexus. Dr. Crackpot's "Plan Zed" involved using S3L-F experiments, originally designed for sleepwalker patients, on corpses -- the result was uncontrollable zombies, now christened Zeds.

Zombie - MPN2

A Zombie from Madness: Project Nexus 2 (That's it)