Aero Sentry Keeper MK-1
The Aero Sentry Keeper MK-1 is a Sentry Keeper No. 1 mounted with two propellers at its feet. This mini boss appears in Talin's Revenge. It will move randomly all over the place, except it will not cross the half of the screen to reach the left side. This mini boss is fought twice, the second time along with the other version, Aero Sentry Keeper MK-2.


2-Way Spreader Shot: The Aero Sentry Keeper MK-1 shoots 12 lines of 10 bullets in a ">>>>>" formation, with 5 of them going upwards, and the other 5 downwards. This attack leaves a gap in the center which the player can use to dodge the bullets.

Laser: The Aero Sentry Keeper MK-1 charges a frontal laser and shoots it. A red line appears as a premonition to indicate the targeted area of the attack. This move covers and counters the 2-way spreader shot's gap. The Sentry will use this attack after it performed the 2-way spreader shot 4 times.