A construction worker is incapacitated by what appears to be a purple bolt of electricity. A short time later two police officers are incapacitated by what appears to be a blue bolt of electricity.
When some monsters are defeated they are seen exploding into a type of purple liquid and other disappear into puffs of feathers.
Large mechanical monsters destroy cars, frighten people away, and leave parts of a destroyed city behind.
We see an old man who has apparently been gravely wounded. No gore.
Scenes of stylized fighting are peppered throughout the film. Many fights involve kinetic martial-arts violence between teenagers and monsters.