Shermie is very outgoing and friendly. However, like some people, she has reservations about society at large, as she considers them stupid, when it crosses beyond her interests and profession. She doesn't seem to take battles and fighting too seriously, often dancing around and picking up her cellphone during battle. Shermie blows a kiss towards her opponent before the battle begins. She only seems to do this when fighting against a male character that she finds attractive. She seems to dislike noisy people, as seen in her special intro with Brian Battler in KOF '98 UM. Shermie has an affinity for hamsters and owns two of them as pets, a male and female pair named Achu (あちゅ Achu?) and Ururi (うるり Ururi?).

Her long bangs make it difficult to see her eyes but underneath them lies a glare with strong murderous intent. Even though she considers human society stupid, it's been noted that she enjoys her lifestyle working as a fashion designer.

In her other (mostly non-canonical) appearances, she seems to be aware of her own Orochi heritage, which sometimes reflects in her quotes. However, while she's clearly not antagonistic as with her Orochi form, she can be just as murderous, manipulative, and ruthless if provoked, especially if faced with particular foes, most notably perverted men like Kukri, and to a lesser extent, Brian.

Since ancient times, the Kusanagi clan opposes the Yagami, each one of them controlling the capacity of the divine flames. The rising generation does not make departures from the rule with Kyo Kusanagi and Iori Yagami. Formerly, these two with Chizuru Kagura formed the "three instruments" who made it possible to overcome Yamata Orochi, a demon being that prevailed in time in the shape of a giant snake. The Corsican business when a called secret organization NESTS unloads clones of Kyo. The survival of humanity is once more threatened...<br>

World-renown animator Masami Oobari directs a special KOF XV animated short using his unique and iconic style. Check out your favorite KOF XV characters kicking butt in this awesome animated video!
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(Source: YouTube video description, edited)