Screwdiver

The Screwdiver (スクリューダイバー) is an Emblem Heartless that is found in Kingdom Hearts and Kingdom Hearts: Chain of Memories. They often appear attached to Aquatanks.

Kingdom Hearts

 * Atlantica

Kingdom Hearts: Chain of Memories

 * Atlantica

Kingdom Hearts
''Heartless that acts with Aquatank. Unpredictable creatures, dashing forward one minute, cowardly retreating the next. They are invigorated by the sparks from Aquatank.''

Kingdom Hearts: Chain of Memories
A Heartless that likes to team up with the Aquatank.

It attacks with a spear or charges its enemies.

Trivia

 * In atlantica in kingdom hearts, even if you deafeat all the enemies before reaching Triton's throne, Screwdivers seem to be still chasing sora and company.