In season 3, during two humans being captured, a Decepticon ask how long they have been dating, causing their behavior two each other. He also says he finds human sex disgusting. He uses the word "interfacing".

Frequent use of brutal violence involving robot characters. Robots "bleed" a blueish-purple liquid, later stated to be Energon, their "fuel and lifeblood". The human characters are put into considerable danger many times, but almost always through their own mistakes. Explosions occur frequently.

Brutal scenes of warfare and robot carnage accompany many flashbacks to the war on the Autobot home planet of Cybertron.

Profanity allegories such as "scrap" are used throughout the series. Bulkhead at least once mentions somebody having "big bearings".

The intense, brutal fights may disturb young children.