Nightingale vs Muromets

Ilya Muromets—resurrected in the modern era with the help of a cybernetic "heart of steel." Appearance: A stately, muscular man of strong build, reminiscent of a "lion-man" thanks to his lush, thick hair and beard. His appearance combines archaic strength with the weariness of a warrior who has outlived his era. Combat Appearance: In battle, he uses a massive, broad-shouldered robot suit in the arena, equipped with heavy armor and shields. During battle, the suit's helmet can partially burn or undergo modification. Nightingale the Robber / Andrei Znamensky—the main antagonist, a cunning, calculating, and envious leader who stole someone else's glory with the help of the elixir of immortality and the magic of Veles. Appearance: He has a pale face, nimble movements, and a pompous, caustic manner of speech reminiscent of the Joker. Distinguished by his tousled red hair. Battle Appearance: His high-tech robot suit is the tallest of all due to its built-in hidden stilts, emphasizing his arrogance and desire to rise above others. Professor Yuri Kiselev is a scientist and inventor who found the frozen Ilya and saved him by implanting a biomechanical heart. Appearance: The classic image of a passionate, but slightly battered genius and single father. He wears simple casual clothes, glasses, and has a slightly tired but determined look. Yegor and Maxim Kiselev are the professor's sons, who help Ilya adapt to the new world and repair equipment. Appearance: Ordinary modern teenagers. The older Yegor is more serious and collected, the younger Maxim is hyperactive, passionate about robotics and pop culture, blue-eyed, dark-haired, 15 years old. Dasha is the daughter of Znamensky (Soloviev). In action scenes, he controls a Firebird robot with mechanical wings that actually glow with bright flames. Spider is a stunt robot suit in the arena, moving on hidden legs.
Centuries later, Nightingale survives to this day, becoming the head of a high-tech corporation in modern-day Moscow. He possesses "steel heart" technology and uses flying combat robots.