Judgment

Judgment is a monster with decent stats, but its attacks actually deal a pretty strong amount of damage, except Rock Shower, which does the least. Due to it being unable to move besides turning around, you can stand right outside of its Fire Pillar's range and hit it with Magic spells easily. If you are facing two Judgment, you can do the same by being between them and right outside of the Fire Pillar range.

In the Gameboy game, while it follows the same rule of "cannot move", it still has actual untold Agility, but it's just called Speed, which is 0. Like the Nintendo 64 version, it's easy to stay away from it and use Magic to attack it. Now that it lacks Rock Shower, it's extremely easy to fight against.

Enemy Formations
Judgment x 1

Judgment x 1, Pin Head x 1

Judgment x 2

Judgment x 3

Trivia

 * Judgment is enemy byte value 0 in the coding.
 * Its design is based upon Hades, specifically from the Bible's Book of Revelations. Though it's not grouped with it directly, Pale Rider also represents Death's Horse.
 * Pin Head is also based upon the Dragon from the same Book. Spriggan might be the Tempter.
 * Despite being a Judge name-wise, it holds a spear itself.
 * This is one of two monsters who cannot physically move in battle(turning around aside). The other is Flamed Mane. Among most cases of special gameplay oddities, these two are consistent in the Gameboy and Nintendo 64 game.
 * Judgement is another common way to spell the Monster's name.