PTX-003C Alteisen in Kuro Kara Kuri edition is an imposing dark armored figure. The design fuses heavy industrial aesthetics with crisp panel lines and mechanical joints. The surface features a matte black base with gunmetal accents, subtle metallic sheen, and razor-sharp edges. Fine panel lines emphasize mechanical complexity, with visible inner frame through some armor gaps for a dynamic silhouette. The figure features a large chest piece, reinforced forearms, and leg guards that evoke the original mecha's heft. Display-ready pose potential highlights dynamic ready-to-strike stance, weapon mounting points, and balance across multiple axes. The finish is crafted to appeal to collectors of OG mechas, with premium craftsmanship and display appeal.

Within the Super Robot Taisen OG universe, PTX-003C Alteisen is a flagship unit in the OG: Original Generations continuum, piloted by a key strategist or allied hero. Built to endure frontline assault, Alteisen embodies raw power, heavy armor, and thunderous melee capabilities. In the Kuro Kara Kuri variant, the Alteisen is refined by a covert development program that cloaks its silhouette in shadowed chrome, allowing it to slip through enemy lines while maintaining overwhelming punch. The unit's reputation is earned through brutal crossfire, close-quarters duels, and a relentless assault pattern that tests enemy formations. Collectors appreciate the design for its historical significance within the OG saga and its modern reinterpretation by Flame Toys.