|Artwork for the Rush Coil from Mega Man 7|
When used, Rush is summoned to the area in front of the player. While he's present, the user can fire basic buster shots. Jumping on him will cause him to launch a spring from his back that boosts the user up seven tiles by default. If bounced on underwater, they can go as high as seventeen tiles instead. If Rush is left idle for three seconds, he will teleport away automatically. Rush cannot be successfully summoned within two tiles of a wall, or if the user if at least four tiles above the area where he would land.
|Sprite of Proto Coil from Mega Man 9 and Mega Man 10.|
When attempting to spawn it too close to a wall, it will despawn rather than teleport away. Besides this, it is functionally identical to Rush Coil.
Even if Proto Man has the Proto Strike function enabled, he uses uncharged Proto Buster projectiles.