15 Insane Boss Transformations in Video Games

Invader King – Metal Slug 6

Located deep underground, the Invader King is seemingly resting inside of a flesh-covered dome of sorts. Deal enough damage and the dome cracks with the King seemingly dead…until its eyes flash and it fully emerges, shooting deadly projectiles and lasers. Eventually, its head casing cracks and the player starts falling with the Invader King chasing after, still raining down projectiles. Upon defeat, it falls to its final death.