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Sentries are idle mutants that appear in the games Blaster Master/MetaFight, Blaster Master: Enemy Below, Blaster Master Zero, and Blaster Master Zero 2.

Physical Appearance

Sentries come in two different forms. The first form resembles a large two-legged grey, yellow in Blaster Master Zero, shell that looks like it has split open, with a single eye that has an irregular eyelid that closes sideways along with a claw-like mouth in the center of the mutant. The second form has the same eye type, but the mouth is below it, along with having a grey (blue around the center, and green outside the center) body covered in spikes.

Games

Blaster Master

Sentries appear in Blaster Master, first found in the first area of the game, where they have two different variants with attacks.

Orbit Sentry

As their name implies, Orbit Sentries launch revolving bullets around them upong being attacked. Due to the durability of these enemies, they may take a little bit to defeat.

Spread Sentry

The Spread Sentry acts differently from its other counterpart. Instead of firing obriting bullets, they will fire a spread of bullets towards the player.

Blaster Master Zero

Both Sentries, now sporting different colors, attack just like their classic counterparts.

Blaster Master Zero 2

Sentries once again appear, starting on Planet Montoj. They act as their previous incarnations, but now have a new dangerous ability. If there is a purple GX680 in the same room as them, the walking mutant will run towards a nearby Sentry, which will proceed to eat the GX680. Depending on the Sentry's type, they will turn grey and split open, either launching a Spin Disk or releasing a huge swarm of bug-like mutants, before destroying their selves.