Tester Zero

The Tester Zero (テスター・ゼロ) is a Shield that can be wielded 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.

Design
Tester Zero is almost entirely grey, symbolizing that it is the most basic of all of Vexen's weapons through the use of achromatic colors. It is shaped like an upside-down heart with one circular section taken out of each side. This has the effect of making the top of the shield resemble a spike from the Nobody logo. The shield also has two more large spikes at the bottom; one protruding from each of the bumps on the heart. Tester Zero's border is silver and its face is grey.

Tester Zero is a term usually referring to the first product being tested.

Gameplay
Tester Zero's ground combo begins with a swipe from right to left. It is followed by a lunge forward, then finishes with thrusting the shield in a straight line with several hexagon shapes appearing when it comes in contact with an enemy.

The aerial combo begins with a downward slash, followed by a sweep from right to left, and finishes by sending the shield to orbit around him, causing hexagons when halted.