Suggestions by @shlomithamalka

Gideon Emery

as Damien Darkblood in Invincible

Rami Malek

as Grand Regent Thragg in Invincible

Greg Bryk

as Donald Ferguson in Invincible

Harry Lloyd

as Shapesmith in Invincible

Mary Mouser

as Shrinking Ray in Invincible

Shaquille O'Neal

as Lucan in Invincible

Halle Bailey

as Amber Bennett in Invincible

Henry Simmons

as Darkwing in Invincible

Hoyeon

as Kate Cha in Invincible

Kelly Hu

as Debbie Grayson in Invincible

Roman Reigns

as Thokk in Invincible

David Harbour

as Allen the Alien in Invincible

Daveed Diggs

as Angstrom Levy in Invincible

Michael Chiklis

as The Mauler Twins in Invincible

David Kross

as Josef in Invincible

Quincy Isaiah

as Markus Grimshaw in Invincible

Freya Allan

as Samantha Eve Wilkins in Invincible

Vincent D'Onofrio

as Conquest in Invincible

Sunny Sandler

as Amanda in Invincible

Tyler Hoechlin

as The Immortal in Invincible