Bomb (Metroid series)

Samus' Bombs
Bomb, also known as Morph Ball Bomb, is Samus' Down Special Move in the Super Smash Bros. series. Samus shifts into morph ball mode and lays a bomb, which will explode either after a set time period or upon contact with a character, shield, or breakable hitbox.

Overview
If Samus is on top of a bomb when it explodes, she will shift into morph ball mode and bounce up; thus, if Samus uses Bomb while touching an opponent, she will hit the opponent or their shield with the bomb and be popped up into the air. The mechanics behind the Morph Ball result in the Super Wavedash in Melee. Bombs almost always hit twice, although the two hits are essentially indistinguishable; if a bomb drops onto an opponent from above, it may hit them once and bounce off without exploding. Bombs may do between 2% and 7% damage.

Bombing while in mid-air causes Samus to go into Morph Ball mode, and slows down her fall. Thus, in Super Smash Bros., Samus can repeatedly bomb while holding towards the stage to better her recovery, although this takes away her midair jump if she still has not used it. In Melee, bombing twice consecutively in the air will cause Samus to pop upward from the first bomb, giving her near-infinite horizontal recovery. "Bomb jumping", as this is known, is reputedly possible in Brawl, but is less efficient.

Slip Bomb
Slip Bomb is one of Samus' Down Special Moves that can be used via customization. Samus drops a bomb which can knock opponents over but does less damage.

Mega Bomb
Mega Bomb is one of Samus' Down Special Moves that can be used via customization. Samus drops a larger bomb with a longer fuse, but can only drop one at a time.

Origin
Morph Ball bombs have been standard in all Metroid games, along with the Morph Ball Bomb Jump, a common tool for puzzle solving. The appearance of the Morph Ball in all three Super Smash Bros. games is derived from the original Metroid, due to its lack of spiral patterns. In Brawl, it is also more detailed.

Also, in a number of the Metroid games, there is a more powerful version of the Bomb, aptly called the Power Bomb. It is always obtained very late in the games, and often the last power-up; this is due to it being essentially the most powerful weapon in all of Samus' arsenal, as it is makes a massive explosion capable of penetrating virtually every type of armor/shielding other than Samus and incinerates all living things in its range, as well as obliterating almost everything else (Of course, in the games, this is limited to eliminating/damaging enemies and only destroying extremely select obstacles, despite it being effectively a near-spammable small nuke). Its destructive capabilities as compared to the Zero Laser are unknown, though most likely the Power Bomb is still magnitudes more powerful.

Approaching
Bombs are a large part of Samus's approach in SSBM. Simply running, wavedashing, or SWDing towards the opponent and bombing off of them gives several options. If the bomb hits, a fast-fallen aerial will almost certainly hit as well during the stun, and can lead to easy combos or edgeguards. If the bomb is shielded, Samus can either fast-fall an aerial anyway and go into grounded shield pressure with jabs, tilts, and grabs; bomb again while still on top of the opponent and severely wear down the shield, or simply jump away onto a nearby platform. Wavebombing, a technique found by Co_and_me, consists of Bombing off an opponent followed immediately by a downwards airdodge: this functions as a quick wavedash and allows various continuations.

Spider Ball
In Brawl, however, Samus is capable of also using her bombs to perform the Spider Ball technique. To perform, run off the edge of the stage or platform and immediately activate the bomb, then direct Samus back onto solid ground as she hops into the air. This will drop the bomb directly against the ledge of the stage, creating an effective edgeguard in itself as well as a setup for other possible attacks, such as a Down Tilt or Down Aerial Meteor Smash.

Morph Ball
''One of the numerous modules integrated into Samus's Power Suit, This one allows her to transform into a compact mobile sphere and explore tight spaces. In the very first Metroid game, it was known as the Maru Mari, which is just Japanese for "roll up", but it was later changed to the much-cooler-sounding Morph Ball.''
 * NES - Metroid (08/1987)
 * SNES - Super Metroid (04/1994)