Thunderblast is obsessed with power. Not attaining it for herself, but rather, latching onto a "male" Transformer who has a lot of power. She follows the strongest Decepticon she can find, and the stronger he is, the more infatuated with him she is. As such, she is usually seen clinging to Galvatron (who certainly doesn't reciprocate). But as soon as the power structure shifts, so does the focus of her affections

Though she's fickle and flighty (and greedy and selfish and opportunistic and vain