Final Guard

Final Guard (also known as an Guardian) are large armors that are usually near the end of the game, blocking the path to the end boss, usually Dracula. They are a step up from Great Armors. In some games, you can morph into a flying animal and fly over them, but in others, they are so large as to make this impractical. Typically resistant to all attacks, it wields a large shield and sword. Fairly slow.

Castlevania: Symphony of the Night
This enemy, found only in the two hallways adjacent to the clock room in the Black Marble Gallery of the Reverse Castle, are extremely dangerous. Their attacks consist of: An overhanded slash, a rapid-fire thrusting attack, or a wave of blue flames.

If they fall under damage, especially rapid damage such as from the Crissaegrim, they will raise a shield and be completely immune to damage for the duration, which is only a matter of seconds. However, if they continue to take damage, they will keep raising their shield. While this is tedious, it provides a way for Alucard to defeat them without fear of counterattack.

Curse of Darkness
In this game, the Final Guard is, as always, the most powerful of the Armor enemies. This time around, it glows with a blue aura. Although this may seem unimportant, it is, for as long as the aura remains, a green shield will appear out of nowhere and block your attack. When the aura temporarily disappears, he will attack, giving you a small amount of time to attack the elite guard.

Portrait of Ruin
As his name says, the Final Guard watches and guards the key area of the Castle, such as the Castle Keep and also appear in several of Brauner's paintings, such as Dark Academy and Nest of Evil. He is strong against any attack unless a cheat is used, or by spamming 1000 Blades Dual Crash and/or Greatest Five. It is also worth to note that his sword is male, while Great Armor's sword is female.

Trivia

 * It can be interesting to note that the Final Guard and the Iron Golem enemies swap their roles in Portrait of Ruin. In Aria of Sorrow and Dawn of Sorrow, the Final Guard took decent amounts of damage while the Iron Golem only took one point of damage with each attack. In Portrait of Ruin, Final Guard only took one point of damage, but his HP was reduced down to 50, while the Iron Golem took regular damage, and as such, had his HP count increased to 999.
 * Another point of interest is that in Symphony of the Night, while being one of (if not, THE) strongest regular enemy, Final Guard is also the best source of experience while being the easiest to beat. If a player has acquired the Moon Rod, all you need to do (regardless of level) is press down, down-right, right, attack. The Moon Rod's special attack will summon 4 blades that target the nearest enemy. If used while the Final Guardian is in the same screen, but far away, not only will the Final Guardian not attack or defend, but the four swords will make quick work of him. At level 25 you will only need to use this attack twice to kill a single Final Guard, netting you insane amounts of experience, easily letting you surpass the level 45 and higher marks in a matter of minutes.