Gold Sentinel

The Gold Sentinels are a type of advanced sentinel more intricately tied to The Tall Man.

Phantasm II
The Gold Sentinel is introduced as a more superior version, with tools that allow it not only suck out blood, but also torture victims beforehand. It cuts off Father Meyers' ear before drilling into his head.

Phantasm III: Lord of the Dead
After the Tall Man has been left in a freezer, a Gold Sentinel bursts out of his frozen body to shatter through the glass and escape, pursuing Tim through the corridors and flying straight through Zombie Edna's head. It's stopped by Reggie with the help of a plunger and liquid nitrogen.

Later, it's revealed that Mike also has a Gold Sentinel lodged in his head, and his eyes turn into metallic gold as well, causing him to flee in horror.

Phantasm IV: Oblivion
The Tall Man and Jody capture Mike and prep him for surgery to extract his Gold Sentinel using a whirring blade on another sentinel. However, using a tuning fork, he is able to temporarily freeze them into place and escape back to Death Valley through a Dimensional Fork.

Mike's attempt to kill the Tall Man via a bomb in his hearse prove to be unsuccessful and the Tall Man rips the Gold Sentinel out of his head and takes it back with him through the Fork.

Phantasm V: Ravager
Confronting Mike over a canyon on the Red Planet, the Tall Man ignores his pleas and sends a Gold Sentinel (possibly the same one he removed) towards him. Mike's eyes turn a metallic gold again, however he is able to control the Sentinel and send it away, angering the Tall Man.

Appearances

 * Phantasm II (1988)
 * Phantasm III: Lord Of The Dead (1994)
 * Phantasm IV: Oblivion (1998)
 * Phantasm V: Ravager (2016)