Splitter missiles were projectiles fired by Amon's Forces at enemies during the End War. When destroyed, these missiles fired four smaller missiles to targets below them, dealing significant damage.
Splitter missiles appear in the Co-op Missions mutator "Missile Command". They do not do damage until shot down, and from there they spawn smaller missiles. These split missiles deal 75 damage each to targets below them, and cannot be destroyed like the other missiles in the mutator.