Goldbug

After Bumblebee was badly damaged while fighting a hate-plague infected Superion, he was rebuilt as a Throttlebot by a Quintesson who was aiding the Autobots at the time. The newly brought back to life Optimus Prime gave Bumblebee his new name Goldbug due to his new look. As Goldbug, he has the mind of the Autobot Bumblebee, but with a new, improved body. More serious, assertive, mature than he was. Realizes what others think of him isn't nearly as important as what he thinks of himself. Excellent fuel efficiency; 2 1/2 times better than the next best Throttlebot. Adaptable to underwater, cold and hot environments. Can withstand temperatures from -150 to 180 degrees Fahrenheit.

(Source: Wikipedia)