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The Blox Bug is a Pureblood Heartless found in Kingdom Hearts coded.
A Blox Bug's main body is nearly identical to that of a regular Bug Blox; it is a black cube with red circuitry. It has a single, glowing yellow eye near the center of the front of its body. Four long, red, spider-like legs sprout from its sides.
The Blox Bug's name is a play on its insectoid legs and its resemblance to Bug Blox.
The Blox Bug has two basic attacks. One of these attacks is a charge which can be blocked and countered if the Counter Ring accessory is equipped. The second attack is a drill-like attack, the Bug Blox will jump into the air and rotate as it drops. These enemies have low health points and attack power making them easy enemies to defeat.