These two characters really couldn't be any more different. The Transformer, Bumblebee, has appeared in various sources of the Transformers franchise, including the movie of course, and is usually depicted as a small, yellow Autobot with the alternate form of a compact car (a Camaro in the movie, for example). He is a key member of the heroic Autobots. DC's Bumblebee has no true superpowers per se - her abilities come from her scientifically created super-suit. The suit enhances her physical strength, acts as body armour which provides her with added durability and allows her to fly and create painful sonic blasts. She is shrunk to an insect-like size, making her an important member of the heroic Teen Titans and Doom Patrol when it comes to infiltration. She very much resembles a bumblebee in terms of her appearance.