In a manner that is heavily reminiscent of the most masculine of men, Sully possesses a personality that is characterised by a spirited zealousness, brimming with self-confidence and passion - a fact that has caused her to be regarded as being cooler than most men, earning her the admiration of many a woman in Ylisse. Such a fact is concretised in her supports with Miriel, who notes that her language is rather brusque and vulgar, alongside her general character being one that is aggressive, traits that are stereotypically instituted as hallmarks of masculinity.