Super Star

The character who grabs the Star becomes INVINCIBLE! ...but only for a short while. The Super Star (, Super Star), known as the Starman prior to the PAL release of Super Smash Bros. Brawl and the NTSC release of Super Smash Bros. 4, is an item from the series.

Origin
The Super Star made their made their debut in Super Mario Bros. and has become a recurring item in later Mario games. The Super Star allowed the player to become temporary invincible and easily defeat enemies simply by touching them, giving them a multicolored, sparkling appearance. It is also accompanied by a special musical theme that plays over the level's theme music.

The Super Star has become a recurring item in the  series and serves as the logo for the. When used, it allows the player to become temporarily invincible, increase their speed, and knock over any opponents they drive into.

Similar in appearance to the Super Star is the Power Star, a collectable object throughout the Mario series.

In Super Smash Bros.
The Starman debuts as a duration and attachment item.

The Super Star bounces on the field and off platforms or walls in large arcs, and can fall off the stage if not grabbed in time, mimicking its behavior in the games. The player's fighter will become invincible for ten seconds, but it doesn't damage the opponents when touched. Also, the player's fighter will be given a bright, sparkling appearance and is accompanied by the special music theme which completely replaces the stage music, causing it to reset after the Super Star's effect wears off. The music theme is given a slight remix.

In Super Smash Bros. Melee
The Starman returns as an item, reprising its behavior from Super Smash Bros..

Unlike in the previous game, the Starman's theme music lowers the stage music's volume to the point that it becomes extremely difficult to hear over the layered theme.

In Super Smash Bros. Brawl
The Starman returns as an item, reprising its behavior from the previous games.

Unlike the previous games, the player's fighter who grabs the Starman is accompanied by the original theme music from Super Mario Bros.. Also, the player's fighter under the Starman's effect can be hit with the Team Healer.

In Super Smash Bros. 4
The Super Star returns as an item, reprising its behavior from the previous games.

In Smash Tour
The Super Star appears as a blue trophy item. When used, it makes the player's fighter invincible and twice as fast.

Trophy
The Super Star appears as a trophy in both versions.

In Super Smash Bros. Ultimate
The Super Star returns as an item, reprising its behavior from the previous games.

Spirit
Super Star also appears as an Ace-class support spirit.

In Adventure Mode: World of Light, Super Star is presumably one of the countless spirits captured by Galeem during his takeover of the universe. The Super Star spirit is located in the eastern cloud area of The Light Realm and serves as the penultimate battle before battling Galeem.

Super Star's Spirit Battle uses a puppet fighter and is fought on the Peach's Castle stage. During the battle, the Super Star appears as an item, while Rosalina & Luma becomes temporarily invincible when they reach high damage, referencing the invincibility effect of the Super Star. Also, all fighters become easy to launch, referencing the Super Star's ability to allow the player to easily defeat enemies by knocking them off-screen.

Trivia

 * Characters who have grabbed the Super Star can avoid the acid in Planet Zebes and Brinstar, or the lava on Norfair which will result in a self-destruct since fighters fall through it to the blast zone.
 * In Brawl, if obtains the Super Star and uses Grenade Launcher, the visual effect of the Super Star will still appear. This happens whenever he uses an item that gives a visual effect, like the Smoke Ball.
 * Bulborbs on Distant Planet are still able to trap characters invincible from a Super Star, though they won't be KO'd.
 * When the music would normally stop for a moment (i.e. a certain move or event such as KO Uppercut or Finishing Touch hitting somebody) when the Star is in effect, that doesn't happen.
 * If a player touches a Super Star while grabbed by an opponent, they will stay grabbed for the normal duration, but will be immune to pummels, and will take no damage from throws. They still take full knockback from throws however.
 * In Ultimate, the invincible theme doesn't loop correctly, as on every second repeat, the song audibly loops too early.
 * In Ultimate, if a character is on their last stock in a Stamina Battle and is grabbed, becomes invincible from a Super Star while being grabbed, and then thrown with low enough HP that the throw would KO, they will trigger Special Zoom as if they were KO'd, but won't take any damage or be KO'd.
 * The Super Star is one of three items that will change the music being played on the stage temporarily, the other two being the normal and the Golden Hammer. Incidentally, all three come from Mario and its sub-universes.