The phrase "outsized personality" refers to someone who has an unusually large and distinct presence, often being bold, expressive, and attracting a lot of attention. Full definition
I wouldn't go quite that far, as there are great athletes who played for a long time with outsized personalities in other sports, too. (sbnation.com)
The pages of magazines like this one are full of them: dominant CEOs whose will and outsized personality seem to drive the companies they lead. (canadianbusiness.com)
Granted, Mary Todd seems to have been a rather outsized personality, so some theatricality makes sense, but I think Field goes too far. (dvdmg.com)