Diffusion Missile
From Metroid Wiki
The Diffusion Missiles are the third and final Missile upgrade in Metroid Fusion, the only game featuring it so far. They add a similar effect to the Missile Launcher as the Charge Beam to the Power Beam, so that Missiles can now be charged. When charged, the Missile has a scattering effect when touching any wall or enemy but unlike charged Missile shots from other games, one charged shot only uses one Missile.
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