Knuckles the Echidna is rendered in agile, battle-ready style with a compact, four-inch figure height. The figure uses a bright red fur color with subtle shading to highlight muscle and form, contrasted by clean white gloves with clearly defined knuckles. His head features the iconic jagged crest of head spines that sweep back, and his determined green eyes are painted with sharp detail. The sculpt captures Knuckles' sturdy stance and athletic pose, with an articulated neck, shoulders, elbows, wrists, hips, knees, ankles, and a waist joint for dynamic posing. Textured fur, precise seam lines, and durable plastic give a lively toy that reads cleanly in action poses for display or play.

Knuckles the Echidna serves as the steadfast guardian of Angel Island and the Master Emerald. Born into the ancient Echidna race, he holds a deep sense of duty that often puts him at odds with Sonic the Hedgehog when their goals clash. Yet beneath his serious exterior lies courage, loyalty, and a willingness to learn from allies. He travels the island carrying the weight of responsibility, guarding against treasure-seeking villains and natural dangers alike. In moments of danger he relies on strength, endurance, and quick thinking, forging unexpected friendships with other heroes when the Emerald is threatened.