Hot Rod (aka Rodimus and Hot Rodimus) is brash and headstrong, with an overwhelming self-confidence that borders on arrogance. Kup has assumed the role of mentor and advisor to the impetuous young Hot Rod, offering him wisdom and advice when he needs it (though Hot Rod rarely feels that he does, much to Kup’s annoyance).
Rodimus Prime persona—while still headstrong and stubborn—seems to suffer from a severe lack of confidence, often doubting his own decisions and expressing distress over his position as an Autobot leader. Of course, much of this comes from comparisons with his former commander Optimus Prime—and let’s face it, shoes-to-be-filled just don’t get much bigger than that.
Transformers 