In the early series, Rodimus was the leader...but Galvatron was more fixated on Magnus. I got the impression he didn't think much of Rodimus as a leader and often underestimated him (because of his youth/lack of experience). The movie and the series were opposite...in the movie, Magnus was made somewhat lame even though imposing. Hot Rod was the "chosen" one, although no one knows why. In the series Magnus seemed more like the leader, Rodimus a 'tricked up' wannabe. Likeable, but not remarkable in any way. Galvatron treated Magnus more like the ""real" Autobot leader, even after Prime got the matrix. Interesting.