|Affiliation||Griffin & Kryuger|
|Voice actor||Kariya Rui|
|Released on||CN, TW, KR, EN, JP|
Helianthus (name meaning "sunflower', otherwise shortened to Helian) is a high-ranking officer within Griffin & Kryuger, Berezovich Kryuger's assistant and second-in-command of G&K. She is responsible for not only relaying orders from HQ to the Commander, but also for monitoring and reporting on the actions of the Commander.
Upright and calm, Helian is methodical and a little stubborn, but she has a good temper and takes good care of the people around her, though she's highly particular about her principles. Her stern and efficient way of doing things, along with her absolute loyalty to Griffin, has won her Kryuger's complete trust.
She isn't young, but still remains unmarried. She frequently sneaks off to take part in mixers but they invariably end in failure. She loses her patience with anyone who mentions this. Thanks Kalina! 
At the start of Girls' Frontline, she is sent to the outer rim of Griffin-controlled territory, as to investigate the truth behind the Sangvis Ferri attack that had occurred, with the help of the player in the role of the Commander.