Ilektra Kostopoulou was born in Athens in 1986. She first took up martial arts at the age of 15, training regularly in kickboxing for two years.

In 2025, she began training at Krav Maga Guerrilla with instructor Antonis Dardavesis. Through regular practice, specialised seminars and the Instructor Course, she completed her Level 1 training in 2026 and qualified as a Guerrilla Partner instructor under the supervision of head instructor Panagiotis Zacharios (Expert Level 3).

She also practises strength training, Pilates and shooting, continuing to develop her knowledge and skills.