Metal Slug 3: Mission 5: All About Love (Final Boss & Ending)

Metal Slug 3’s final mission, Mission 5, begins with a choice between the Slug Flyer and Slug Copter, leading the player through aerial combat, a forest, and a showdown with Hairbuster Riberts and Allen O'Neil. After defeating General Morden, the player discovers he is a Martian in disguise and is captured, forcing the use of a different character to rescue Fio. The mission then shifts to a top‑down space shoot‑em‑up against Martian forces, culminating in battles against the Rootmars and its clones, with the player fighting through waves of mechas, green clones, and zombie‑like enemies. At 15:38, the player confronts the final boss, the real Rootmars, whose weak point is his brain, while a rescued Fio assists from a UFO. After defeating Rootmars, the characters land safely, and the Rebel Army retreats victorious, marking the end of the war.