Melissa McCarthy, Octavia Spencer bungle super powers in 'Thunder Force' trailer UPI News Service, 03/03/2021 Netflix released the trailer for Thunder Force on Wednesday. Melissa McCarthy and Octavia Spencer play superheroes having trouble adjusting to their new powers. ADVERTISEMENT Spencer plays Emily, a scientist who develops a formula to give people superpowers. McCarthy plays Lydia, a friend who injects herself and gains super strength. Emily gains the power of invisibility. Emily and Lydia become Thunder Force and try to save the city, but their new powers aren't foolproof. Emily appears beside a convenience store robber (Ben Falcone) and tasers him, but freaks out over the extent of the shock.