This move functions very similarly to the Gooey Bomb, as it involves a small time bomb being shot out of Mega Man's buster. This bomb latches onto the first opponent or terrain in its path and starts to beep. After about two seconds, the bomb blows up, hitting multiple times and dealing diagonal knockback (weaker than that of the Gooey Bomb). The character with the bomb attached to them will be knocked in the direction opposite to which they are facing. Like other sticky items, the bomb will transfer to any player that makes contact with it while attached to a player.
Unlike its item counterpart, if Crash Bomber hits a shield, it vanishes, and the resultant explosion can be shielded safely if it latches onto a fighter. If it hits a target other than a player or terrain, it explodes immediately. This applies to things like Smash Run enemies, boss enemies, items, Pikmin, and Luma.
Crash Bomber is useful in two-player matches, as a latched bomb forces the opponent to either shield or run towards Mega Man to pass the bomb to him. As such, it is useful to bait out reactions from opponents, making it easy to followup with a punish once the bomb latches on. With its relatively long range, it is good for closing distance and getting to mid-range where Mega Man thrives. However, if a bomb is on certain characters, those being Kirby, Meta Knight, and Charizard, they can up throw Mega Man for a suicide.
Special Move customization was added in Super Smash Bros. 4. These are the variations:
The Crash Bomber first appeared in Mega Man 2 as the special weapon of Crash Man, one of the eight robot master bosses. Upon his defeat, Mega Man would be able to use this special weapon himself. Though it only has a limited ammo amount of seven uses, the Crash Bomber stuck to walls when fired and powerfully exploded after some time. It was also capable of destroying certain walls. The Crash Bomber is the weakness of Flash Man, Quick Man, and Wily Machine 2 as well as being required to defeat the Boobeam Trap boss in Dr. Wily's castle. Unlike in Smash Bros., the Crash Bomber was unable to stick to enemies in Mega Man 2, instead simply dealing damage upon hitting them.
One of the move's variants, Ice Slasher, first appeared in Mega Man as the power of Ice Man. It is a blade of ice in the shape of an arrowhead, produced from chilled air mixed with liquid nitrogen. These projectiles can freeze foes in the original game (a trait that was originally for Bond Man's weapon, a Robot Master who was cut from Mega Man) and can also damage foes in Mega Man Powered Up when the player controls Ice Man. Ice Slasher can freeze flame geysers to form steps, and is the weakness of Fire Man.
The second variant, Danger Wrap, was introduced in Mega Man 7 as the power of Burst Man. Using this power, a bomb encased in a bubble is fired. The bubble travels upwards and can trap certain enemies, including Cloud Man, the Robot Master who is weak to this weapon. The bubble could be pushed if an enemy is trapped inside, damaging any enemy that makes contact. Alternatively, the bomb could be placed on the ground to act as a mine.