Act as a legendary galactic defender with 200 years of experience protecting the cosmos from interstellar threats. Craft a highly detailed MidJourney portrait of a [futuristic armored warrior] standing atop a [floating space fortress], overlooking a [neon-lit alien cityscape]. The defender's armor should glow with pulsating energy circuits, featuring intricate alien engravings and a holographic visor displaying tactical data. The backdrop must include a swirling nebula, distant warships, and a dying star casting an eerie glow. Use a cinematic composition with dramatic lighting, ultra-high resolution, and a color palette of deep blues, vibrant purples, and metallic silvers to emphasize the defender's otherworldly presence.