The Killer Eye is a guarding turret that will attack any foes within range. It will attack all enemies nearby, and unlike the Medusa Head, it will not attack allies or the one who placed it. However, its shots can still damage anyone, friend or foe. Once placed, the Killer Eye will attack foes with a ceaseless barrage of shots that do not nullify enemy fire but have strong knockback ability. Because the Killer Eye cannot attack foes who stand directly behind it, it is recommended for one to place it next to a wall in a large, open area.
The Killer Eye appears as an item that the player can use on the battlefield, where it operates similarly to how it works in Kid Icarus: Uprising.
Super Smash Bros. for 3DSA compact, user-friendly turret. Take the name literally—anything in its field of vision will be showered with a storm of bullets. But if you placed it, it'll be your friend! If you didn't, sneak up behind it and grab it to make it yours!
Super Smash Bros. for Wii U
A compact, user-friendly turret. Take the name literally—anything in front of it will be showered with a hail of lasers. Hitting one while it's deployed can change the direction it's firing in, but that doesn't mean it'll be on your side—this dependable little guy stays loyal to the fighter who deployed it.
A compact, movable turret. Any who enter its field of vision are showered with a relentless stream of shots. Press the attack button after picking it up to place it in front of you. It can't attack targets directly behind it though.