Kolin has long blonde hair and blue eyes. She wears her hair loose in a longer style, tucked under a black ushanka hat with a four-pointed star decoration at the center. Her outfit includes a black Afghanka-style military jacket that ends in a miniskirt. She pairs this with thigh-high black stockings and fur boots, replacing the stiletto heels of her former secretary attire. She also wears a grey military-style jacket with black accents, which ends in a miniskirt with yellow trim. While retaining her ushanka hat, she further accessorizes with a pair of mittens and a yellow scarf that covers her mouth. Her usually bare legs are now covered by black tights.

Kolin is depicted as a conniving schemer who alternates between two personalities: a false, kind one, through which she acts as a supportive figure to Charlie Nash and aids her allies like Rashid, and her true self: zealous, ruthless, cruel, and vindictive. This true nature is revealed when she snaps and throws Nash's inevitable return to the grave in his face upon him expressing doubt about his ability to defeat Bison.

One night, Kolin, under the guise of her "Helen" persona, decides to reveal her true goals while sitting at Urien's place.

When she spots you, she greets you and invites you to sit at the same table.

"Ehehe... it's so nice to meet you. Come here. Take a sit, would you?"

Kolin then explains the reason for her invitation.

"I didn’t quite explain myself before. Let me just say that I utterly despise Bison... but there is another man more suited to lead this world. That’s why I want to destroy Shadaloo. Is that satisfying enough?"