Watcher

The Surveillance Robot (サーヴィランス) is an Emblem Heartless from Kingdom Hearts II, featured in the Battle of 1000 Heartless. They fire streams of lasers, and Sora can grab them from behind to blast nearby enemies. The boulder which hit Goofy while trying to protect King Mickey was created by a Surveillance Robot.

In Kingdom Hearts 358/2 Days, A large, silver version of the Surveillance Robot known as a Guardian appears as a boss in Twilight Town.

Journal Entry
Use reaction Commands Snag, then Sparkle Ray to attack surrounding enemies with a laser!

Keep an eye out for opportunities to use reaction commands even if the laser attack is parried!

Kingdom Hearts II

 * Hollow Bastion
 * Port Royal
 * Space Paranoids

Kingdom Hearts: 358/2 Days

 * Twilight Town

Attacks

 * Twin Laser: Fires two white lasers
 * Mow Down: Spinning saucer ring attack
 * Charge Laser: Fires multiple red lasers