Simon necklace from Tengen Toppa Gurren-Lagann Free 3D print model

Simon’s necklace in Tengen Toppa Gurren Lagann is a simple cord that holds a small drill-shaped pendant known as the Core Drill. This drill is deeply symbolic, representing themes of perseverance, evolution, and breaking through limits — core messages of the series. Beyond its emotional value, the Core Drill serves a crucial functional role, acting as the key to activate the Lagann mecha. The necklace embodies Simon’s personal journey, from a timid boy to a hero who dares to “pierce the heavens with his drill.”