When summoned, Akira will run toward an opponent and attack them with moves like a forward palm strike and an elbow strike, as well as his signature moves like the Tetsuzanko (a body check) and the Renkantai (a double kick). He can also auto-guard. Before leaving the battlefield, he salutes the opponent and says his catch phrase, 「十年早いんだよ！」 (Jū'nen hayai'n da yo!, "You are ten years too early!")

Alucard's appearance and moves take inspiration from his role as the protagonist inCastlevania: Symphony of the Night: he attacks using theCrissaegrim (also known as the Valmanway), transforms intoa bat, and usesMist Form to evade opponents' attacks.

When summoned, the Black Knight will walk slowly across the stage, striking any fighter that crosses his path. His attacks have a high launching potential, and he is immune to flinching when attacked.

When summoned, it repeatedly lunges at opponents from one spot, damaging them. It also occasionally burrows underground and reappears in a different location. It takes its appearance fromPikmin 3, and is the first Assist Trophy from thePikmin series.

When summoned, Chef Kawasaki extends his ladle and traps anyone it hits into a boiling pot, then begins to stir and season the pot for a brief period of time. After that, multiplefood items and any opponents inside the pot are launched out. Chef Kawasaki then produces another plate of food. The attack functions similar to Kirby'sFinal Smash inSuper Smash Bros. Brawl.

When summoned as an Assist Trophy, the two paddles appear on both sides of the screen as a game starts. The two paddles proceed to hit the ball back and forth, the ball damaging any opponents in its path that it hits. Players can also attack the ball to send it in a different direction. A score is kept above, though it does not impact the match; clapping can also be heard each time a point is scored. InSuper Smash Bros. Ultimate, the background changes color when the paddles appear.

When summoned, the Devil will first appear as a bat and fly to the top of the screen. Once at the top, the Devil assumes his true form and begins pointing in one of the cardinal directions, causing the camera, which is otherwise fixed in place during this time, to move in the direction he points. As a result of this, the blast zones of the stages change continuously until the Devil disappears.

After being summoned as an Assist Trophy, he charges up a rolling attack similar toSonic'sSpin Dash and leaps forward, striking any opponents in his path. After doing this a few times, he charges up a more powerful attack that sends him flying off the stage before disappearing.

When summoned, Dr. Kawashima immediately disappears, but causes numbers to fly across the screen. If two numbers collide, they add into a larger number, and if the two numbers equal 10 or greater, they explode. The explosion is bigger and lasts longer (similar to that of aSmart Bomb) if the numbers equal exactly 10. Players can also attack the numbers to knock them away. InSuper Smash Bros. Ultimate, the white, gridded background from theBrain Age games replaces the stage's background when Dr. Kawashima is summoned.

When summoned as an Assist Trophy, he runs and jumps around the stage and fires hisSpecial Weapon,Thunder Beam, which sends out bolts of electricity in three directions that damage any opponents they hit.

He attacks primarily through his sword and by throwing projectile diamonds when jumping. He constantly moves around while attacking and, if he falls off the stage, teleports to the edge. If enough damage is dealt to him, he will stagger before disappearing; otherwise, he will simply go away after a period of time.

When summoned, he runs and jumps across the screen toward other fighters, slashing them multiple times with his katana. He can deflect projectiles, and is unique among Assist Trophies in that he will return from above should he fall off the stage. To unlock him inSuper Smash Bros. Brawl, the player must unlock Snake.

When summoned, Guile stays in one spot, crouched. If a character approaches him, he will attack them with theFlash Kick. If he is attacked from a distance, he will block. He may also fire off hisSonic Boom projectile.

When summoned, an alarm will sound as they will move to one side, shooting opponents with guns and blasting them with cannons. To unlock them inSuper Smash Bros. Brawl, the player must play 300 matches in Vs. Mode or any related mode.

InSuper Smash Bros. Brawl, the player unlocks him after having played 200 matches in the Brawl mode or its relatives. When he appears, Isaac summons a giant hand (a utility ability calledMove) and sends it to the end of the stage, pushing any opponents along with it. He does this three times before disappearing. The hand does not do any direct damage; its only purpose is to send opponents off of the stage. InSuper Smash Bros. Ultimate, however, the hand is also able to attack opponents by slamming into the ground with thePound move. Isaac can also useLift to summon a pair of hands to grab an opponent and carry them off-screen.

As an Assist Trophy, he prepares and launches the big bottle rocket pack: a set of five bottle rockets, which shoot into the air, homing in on enemies in unpredictable trajectories. There will always be four small bottle rockets followed by a big bottle rocket at the end, but there is a one-in-five chance that he will summon a second wave of rockets before disappearing. InSuper Smash Bros. for Nintendo 3DS /Wii U, Jeff's fireworks move straight up before homing in on opponents.

When she appears as an Assist Trophy, also referred to as "Jill & Drill Dozer,"^[1] she rides around the stage using her Drill Dozer, drilling any opponents who come into contact with her. After a while, a whirlwind appears around her that impedes enemies until she disappears.

After being summoned, Kapp'n enters his bus and drives it across the stage. If it runs into any opponents, they are automatically put on the bus and are carried off as Kapp'n drives off-screen. If Kapp'n drives off without picking up any fighter, he will respawn at the center of the screen until his summoning time runs out.

When summoned as an Assist Trophy, Knuckle Joe hops to the nearest opponent and deliver a flurry of Vulcan Jabs. He performs this one more time before finishing off the opponent with either a Rising Break or Smash Punch, both signature moves of the Fighter ability from theKirby series, then disappears. InSuper Smash Bros. for Nintendo 3DS /Wii U andSuper Smash Bros. Ultimate, his attacks are weaker, though he can perform two Rising Breaks or Smash Punches before disappearing rather than one like inSuper Smash Bros. Brawl.

When summoned, Knuckles runs around the stage and usesHoming Attacks similar to Sonic's, and occasionally burrows underground and re-emerges at a different location.

As an Assist Trophy, she has an appearance based onStar Fox Adventures and uses herStaff to cast ice spells as well as to swing at opponents at close range.

When she appears, she charges for an attack. She then teleports to an enemy (usually whoever's closest to her) and slashes at them using her signature weapon, theMani Katti, launching them far. This attack is very powerful and difficult to avoid, capable of hitting enemies that are in the air and even certain characters in their Final Smashes. In games followingSuper Smash Bros. Brawl, she is able to be damaged. If enough damage is done to her before she attacks, she disappears; otherwise, she simply disappears after attacking.

As an Assist Trophy, he attacks by using his club-like sword. Magnus's attacks are very strong, quick, and can attack fighters hanging from ledges. He can also jump to reach airborne fighters and dash forward to reach fighters farther away. If he starts to fall towards a pit, he jumps back towards the edge. If enough damage is dealt to him, he falls to the ground before disappearing; otherwise, he simply disappears after a period of time.

When released, the Metroid floats around the stage, latching onto any players it encounters and sucking their health away, similar to what they do in the original games. InSuper Smash Bros. for Nintendo 3DS, Metroids also appear asSmash Run enemies.

As an Assist Trophy, she attacks by grabbing fighters with her hair and throwing them. If no opponents are near her, she teleports to their location.

When she first appears, severalRinkas appear that damage opponents, though, as they are energy-based, they can be absorbed or reflected. After some time she then uses theLaser Brain Attack for massive damage. When she uses the attack, however, the glass surrounding her container shatters, allowing opponents to attack and defeat her.

When he is released, he simply sits in one spot, and lectures the players through a speech bubble. Mr. Resetti also occasionally causes a small explosion when he is furious. Mr. Resetti can be made to disappear prematurely if the stage scrolls or the platform he is on is destroyed and there's a knockout zone below him.

As an Assist Trophy, he takes on his redesigned appearance first seen in theGame Boy Advance remake,Kirby: Nightmare in Dream Land. When summoned, Nightmare first appears in his Power Orb form before flying to the top of the screen. After a few seconds, he immediately appears in his Wizard form and enlarges himself in the background of the stage while cackling and shrouding the stage in darkness. During this time, the entire screen is black, confusing both players and CPU opponents. Several seconds later, the darkness slowly fades away, along with Nightmare.

When summoned as an Assist Trophy, she attacks all her opponents with lightning attacks. She either creates three small balls of electricity, one giant sphere of electricity, or three quick strikes of lightning. Attacking Phosphora does not defeat her, but it makes her flinch temporarily. Every time she is hit, she moves away from the stage, making it harder for her to hit. Phosphora's attacks can be absorbed or reflected.

He attacks players by transforming into a frog and hopping around, then transforming into a snake and slithering across the ground. If he encounters any opponents, he traps them in a smoke cloud and continuously attacks them, similar to battles in his game of origin; other players can also be caught in this. Afterward, he transforms back into his human form.

It is unlocked as an Assist Trophy after playing at least 100 matches in Brawl mode or its related modes. Being a toy, it is very small, but it is able to fly around the stage at fast speeds. While attacking, it alternates between the two guns in its hands, firing bullets from its left and missiles from its right. The bullets are released in quick volleys and the missiles are single-fire that home in on opponents.

After being summoned as an Assist Trophy, he uses a variety of hisArts:Happy Happy increases the attack and launching power of all fighters,Freezinate temporarily freezes nearby opponents (dealing minor damage as well),Yoink! brings all items closer to him,Bedtime temporarily puts nearby enemies to sleep,You Can Do It slightly heals all fighters, andRoly-Poly trips all grounded opponents. Riki also makes an appearance alongsideDunban in Shulk'sFinal Smash,Chain Attack.

When he appears, Saki takes out his Dolphin Gun and attacks opponents with it. Saki can either fire a burst of shots, dealing moderate damage with weak knockback, or slash in front of himself, strongly damaging opponents and potentially launching them off the stage.

When summoned, Shadow usesChaos Control to slow down all opposing fighters. InSuper Smash Bros. Ultimate, he freezes opponents in place before he disappears. To unlock him inSuper Smash Bros. Brawl, the player must unlockSonic.

When spawned as an Assist Trophy, he walks around the screen and shoots bullets towards other enemies (though he sometimes fires in a haphazard direction), emulating his attacks fromSheriff. If enough damage is dealt to him, he displays his "injured" sprite fromSheriff before disappearing; otherwise, he disappears after enough time has passed.

Shovel Knight uses similar moves from the original game, digging rocks out of the ground with his shovel and aiming it downward while in mid-air to bounce on opponents, damaging them. The shovel may also damage opponents as he is digging the ground. Occasionally when digging, an item appears out of the ground.

When summoned as an Assist Trophy, he emits a dark aura that either reverses the stage or flips it upside down, both of which reverse the controls.

When summoned, Spring Man will attack by punching from a distance, but if the opponent gets too close, he will unleash ARMS Rush, a barrage of punches capable of launching them away.

Spring Man also makes an appearance in the downloadable fighterMin Min'sFinal Smash, which is also namedARMS Rush.

Once summoned as an Assist Trophy, the Starman proceeds to teleport around the stage. After it teleports, the Starman stops in its place, glows, and attacks using eitherPK Beam γ or PK Beam Ω. Getting hit by one of these attacks causes moderate damage and the player is momentarily stunned. The beams act like energy projectiles, so they can be absorbed or reflected. If the opponents cause enough damage to the Starman while it's still active, the Starman is defeated, displaying both the "SMAAAASH!" text and sound effect fromEarthBound before disappearing prematurely. InSuper Smash Bros. for Nintendo 3DS, Starmen also appear asSmash Run enemies.

Sukapon moves around the stage and throws parts of its body at opponents, and can even pick them up and throw them into the air.

Tiki's appearance as an Assist Trophy comes fromFire Emblem Awakening. When summoned, Tiki assumes her dragon form, flies just outside the arena and unleashes a massive fire breath capable of launching anyone caught in it.

When summoned, he will perform his "Kooloo-Limpah" dance and one of the five random effects will happen. These events include spawning multipleHammers andGolden Hammers, having everyone under the effects of theSuperspicy Curry item, making all the opponents slip for a few seconds, zooming the camera in on the character who summoned Tingle, or even doing nothing and flying away with his balloons.

Despite his Training Mode description not saying so like for other Assist Trophies, Vince cannot be defeated.

When summoned, the Wily Capsule cycles through a number of different actions to attack. It always starts by teleports away to reappear elsewhere. Then it will do one or more of the following actions then teleport away to repeat the process. It cannot use the same attack multiple times within the same cycle.

• Fire four energy balls from the capsule, each one moving a short distance in one of the four diagonal diections. The energy balls move in straight lines toward the last positon of the nearest opposing fighter, starting with a short step then a longer charge. They vanish on contact if they hit or fly for too long. There are red, yellow, and blue energy balls, which inflictfire damage,electric damage, andice damage respectively. This is the attack the Wily Capsule is most likely to use.
• Launching an large electric energy ball downward that splits into four smaller balls when it hits a platform. The smaller energy balls crawl along the platform, with two going to the left and the other two going to the right.
• Rapidly spin, then propel itself at the nearest fighter while bouncing off platforms. It inflicts powerful electric damage. This is the only attack not taken fromMega Man 7, instead being original toSuper Smash Bros. Ultimate.

After four full cycles, the Capsule flees into the background and warps away. If the capsule is KO'd, Dr. Wily will fall to the ground and enter his supplication pose before warping away.

When Yuri is summoned, she stays in the background as the reticle of herCamera Obscura moves throughout the screen, and any character photographed with it is momentarily paralyzed and afflicted with darkness. She takes a total of three photographs before leaving the stage.

When summoned, Zero slashes opponents directly with his sword, theZ-Saber, and also uses one of several techniques:Ryuenjin, a flaming uppercut,Kuuenzan, a spinning slash,Genmu Zero, an energy beam, andHienkyaku, a midair dash. After he is done, he shouts, "Back tobase!" and disappears.