While the tone of the film is much more light-hearted and inviting than the other films in the series, 'Bumblebee' features many sequences of robot on robot violence. Robots are shot, sliced in half, blown up, and the like.
Most violent acts happen against humanoid robotic characters, with characters sustaining fatal injuries including dismemberment, decapitation, and crushing, while non-fatal injuries include characters sustaining damage from falls, torture, gunfire, impalement, and electric shock.
Violent acts against human characters are mostly non-gory and bloodless. People are tossed around by explosions and big robots or are involved in vehiclular collisions, but generally are assumed to have survived with relatively minor injuries, although they do show the end results, like a main character who is injured early and has a scar on his face for the rest of the film, while others have various scratches and bruises, while another has an arm in a sling.
Two human characters are killed onscreen with an alien energy weapon that reduces them to a gelatinous liquid smear.
Possibly the most brutal scene depicts a robot being cut in half lengthwise with a sword, shown in closeup, then the two halves fall to either side.
A robot becomes tangled in chains and is pulled into pieces, exploding. It is mainly played for laughs.