
However, Fou's good human side began to overcome Epsilon's evilness and made him want to fight for good. He took Fou's best friend Kaede hostage in an attempt to force Epsilon to come out, causing Fou to transform from a boy into a cybernetic birdman called Epsilon-2. Xi-Tiger attacked a Sierran research facility where he sensed Epsilon in the body of a boy named Fou. The new leader of Scarlet, Xi-Tiger, was hated by his own men for being too ruthless compared to Epsilon, and as such he wanted to destroy Epsilon once and for all even after his banishment. After a while, Epsilon-Eagle, the leader of Scarlet, was ambushed by a team of Sierrans with superpowers, and thrown into the space-time continuum.

Members of the new Scarlet are able to infiltrate other beings as parasites, then modify and/or take over the bodies of their hosts. The mutants rebel against their creators, form a terrorist organization of the same name, and go on to menace their homeworld. Scarlet creates powerful mutant lifeforms for the purposes of space travel and colonization. The plot, if it even matters, begins when a group of researchers called Scarlet from the planet Sierra go too far with genetic engineering.

You play as Epsilon-2, a cybernetic birdman who puts up a fight against the rogue organization Scarlet when they try to Take Over the World. While it shares some similarities with other run-and-guns, the focus here, aside from depending on your reaction time and unique capabilities, involves lots and lots of boss fights. Japanese title screen, immediately setting the game's toneĪlien Soldier is a 1995 Run-and-Gun game by Treasure for the Sega Genesis, serving as a Spiritual Successor to Gunstar Heroes.
