Tester Zero

Tester Zero (テスター・ゼロ) is a weapon that can be used by Vexen in Kingdom Hearts 358/2 Days. It is Vexen's basic weapon, and therefore requires no Gears to be attached to him in order to wield it. In appearance, Tester Zero is almost entirely gray, symbolizing that it is the most basic of all of Vexen's weapons through the use of achromatic colors. This weapon's combo finisher is Vexen thrusting Tester Zero forward, with several hexagons appearing in front of him from where the shield was launched.

Description
''Your most basic weapon.

Nothing really sets it apart.