Core Drill

Lore & Background

The Core Drill is first found by Simon, a meek young digger, while he expands his home deeper underground. It is a drill-shaped key that activates the small Gunmen Lagann, which Kamina names. Using the Core Drill, Simon powers Lagann's drilling-based abilities to destroy a giant Gunmen attacking Giha village and break through the ceiling, allowing him and Kamina to reach the surface. Throughout the series, the Core Drill responds to Simon's Spiral energy, allowing Lagann to produce drills from its body and combine with Gurren to form Gurren Lagann.

In the final battle against Lordgenome, Simon uses his Core Drill to defeat him for good after fighting him with his bare hands. Twenty years after defeating the Anti-Spirals, Simon hands his Core Drill over to Gimmy and leaves his friends to wander the planet as a nameless vagrant, stating that his destiny was merely to 'dig the tunnel to the future.'

Reader's Guide

The Core Drill is a drill-shaped key that activates the small Gunmen Lagann. It responds to Simon's Spiral energy, allowing Lagann to produce drills from its body and combine with Kamina's Gunmen, Gurren, to form Gurren Lagann. Simon can also use it to take control of other Gunmen. The Core Drill is central to Simon's journey from a timid digger to the leader of Team Dai-Gurren, and he ultimately uses it to defeat Lordgenome in hand-to-hand combat. At the end of the series, Simon passes the Core Drill to Gimmy, symbolizing the continuation of his legacy.