Temper Terror is a "normal" elemental sub-species of the Gold Ghost, found by Luigi during the events of Luigi's Mansion.
Temper Terror

A Temper Terror, after being flashed by Luigi


These light blue-white ghosts have fireballs protecting their hearts. Temper Terrors  usually appear in the 2F Washroom and the in Sitting Room, although, a few of them appear also in the Bathroom and in the Boneyard during the blackout. In order to expose the 10-HP heart, Luigi has to shoot water from his Poltergust 3000 (after vacuuming a Water Elemental Ghost, of course) at the Temper Terror, dousing the fire surrounding the heart. The Temper Terror has a punch attack, identical to the one used by the regular Gold Ghost, which must be dodged.