Pyramid is an enemy from Final Fantasy VII. It appears when Turks:Reno uses the attack Pyramid. The character that the Pyramid appears over becomes imprisoned, making them incapable of acting. The Pyramid itself cannot do anything. A single attack, either physical or magical, will destroy it.
A Pyramid is much like a KO or Petrify; if a character is in a Pyramid when the others are knocked out, the player will receive a game over.
Despite Pyramid's stats suggesting it should award 2 AP upon death, no AP is awarded. This is due to its programming to "remove" itself from battle before it dies. Enemies that are removed this way award no AP, EXP or gil to the player.