However, some Transformers are known for their predominantly grey color schemes. These include:
Optimus Prime: While often depicted as red and blue, Optimus Prime has been grey in some incarnations, particularly in the earlier generations.
Ironhide: A tough Autobot often depicted in grey and blue.
Bumblebee: While commonly yellow, Bumblebee has also been depicted in grey and black, notably in the "Beast Wars" series.
Others: There are many other Transformers who have grey as a primary color in their designs.
Note: To identify specific grey Transformers, you need to specify the particular series or continuity you're interested in.