The 2025 Topps ULTRON Chrome Marvel Gold Sapphire #138 trading card is a limited edition collectible featuring the character Ultron from the Marvel franchise. Produced by Topps in the United States, this card is part of a print run of only 50 copies and is made of high-quality card stock with a thickness of 35 Pt. The card is illustrated by Aaron Miller and authenticated by Topps, making it a valuable and sought-after addition to any superhero trading card collection.