An unblockable attack is an attack that cannot be defended against with a shield or a counterattack (although some can be perfect shielded). Unblockable attacks tend to be exceptionally powerful and are often Final Smashes, wielded by bosses, or attacks from rare Pokémon and Assist Trophies. Most characters have at least one unblockable attack, but very few have one that is not a Final Smash.
Unblockable attacks can be avoided by intangibility, such as spotdodges and air dodging.
All grabs are unblockable and so will not be included in the following list.
List of unblockable attacks by characters
- Captain Falcon - Blue Falcon (trapping hit)
- Diddy Kong - Rocketbarrel Boost (the barrels if knocked loose)
- Donkey Kong - Konga Beat (wind)
- Falco - Landmaster
- Fox - Landmaster
- Ganondorf - Beast Ganon
- Ike - Aether (sword while loose), Great Aether
- Jigglypuff - Puff Up
- King Dedede - Waddle Dee Toss (Waddle Dees and Doos, unconfirmed situation)
- Kirby - can copy Nayru's Love, which is not normally unblockable (SSBB)
- Link - Triforce Slash (swipes)
- Little Mac - Guard Breaker, KO Punch
- Lucario - Aura Storm
- Lucas - PK Starstorm
- Luigi - Negative Zone
- Mario - Mario Finale
- Marth - Critical Hit
- Meta Knight - Shield Piercer, Galaxia Darkness (initiation)
- Mr. Game & Watch - up aerial (wind), Octopus
- Ness - PK Starstorm
- Olimar - End of Day
- Peach - Peach Blossom
- Pokémon Trainer - Triple Finish
- R.O.B. - Diffusion Beam
- Samus - Zero Laser (last hit)
- Sheik - Light Arrow (hit 1)
- Snake - Grenade Launcher
- Sonic - Super Sonic
- Toon Link - pummel, forward throw (hit 1), back throw (hit 1), up throw (hit 1), Triforce Slash (swipes)
- Wolf - Landmaster
- Yoshi - Super Dragon (fireball)
- Zelda - Light Arrow (hit 1)
- Zero Suit Samus - Power Suit Samus (last pre-transformation hit)
List of unblockable attacks by items
- Banana - when stationary
- Bumper - when active
- Daybreak
- Deku Nut
- Dragoon
- Freezie - when it "bursts" (SSBB)
- Gooey Bomb
- Hothead - spark
- Motion-Sensor Bomb - explosion (can be blocked in SSB)
- Pitfall
- Poké Ball Pokémon:
- Smart Bomb
- Spring
- Warp Star
List of unblockable attacks by enemies and bosses
- The careening state of defeated Subspace Army goons
- Bucculus
- Crazy Hand - falling bombs (the explosion is blockable, Melee only)
- Duon - wind produced by spin attack
- Galleom - wind produced by various attacks such as dual smash, single stomp, and spin attack
- Meta Ridley - Megafireball, attack where it smacks the Falcon Flyer (?)
- Rayquaza - wind produced by Thunder, spiral dive
- Tabuu - Off Waves, electric shield