The Sentry Robot is an enemy in EarthBound. It appears in the 48th floor of the Monotoli Building. It has high defense, but its other stats are about average. Its normal attack, "firing a beam," does moderate damage, and it can waste a turn by saying "tick-tock." However, it will occasionally use a Bottle rocket, and can "call for help," bringing more Sentry Robots to help it. It's resistant to Brainshock, and is immune to PSI Flash. It has a low chance of dropping a Big Bottle Rocket.

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