HK416 is a tactical doll (T-Doll) and one of the main characters in the mobile game and anime series 'Girls' Frontline'. Based on the real-world HK416 assault rifle, she is a member of the elite AR Team. HK416 is known for her serious demeanor, competitiveness, and occasional rivalry with M4A1. She plays a critical role in combat missions and is highly valued for her precision and effectiveness on the battlefield. Her complex personality and backstory make her a fan favorite in the series.