Thunderblast is obsessed with power. She craves it, but rather than directly attaining it herself, she instead seeks to gain power by latching onto a Decepticon who has it. She forms an instant infatuation with the strongest Decepticon she can find...but as soon as the power structure shifts, so does her affections. She knows how to use her wiles to get what she wants and is always looking for suckers to manipulate to her advantage. She transforms into a speedboat. She also has...er, breasts.