Background characters are minor characters in the that make cameo appearances in their corresponding home Super Smash Flash series stages, normally without interfering in the battles. As such, background characters should not be confused with stage hazards. With the severely limited stage selection of , the game only had one background character in its eight stages, but Super Smash Flash includes many background characters in its large and growing list of stages.
Super Smash Flash 2
In Super Smash Flash
Whispy appearing on
Whispy Woods appears in the background. Unlike his appearance in the original , he is merely a cosmetic addition and does not blow wind.
Super Smash Bros.
In Super Smash Flash 2
ＣＬＥＯＤＢＯＴ appearing in the
Waiting Room Halloween theme.
A Boo can be seen floating above the left couch.
ＣＬＥＯＤＢＯＴ appears for a brief moment on the televisions as they transition from a spooky face to the SSF2 logo.
A Sandbag wearing a Santa hat can be seen jumping happily on the left couch.
A few Lumas are seen soaring around the ship.
The Luma known as Lubba can be seen in front of the steering wheel of the ship.
Koopa Troopas are walking back and forth on the platforms in the background.
A Buzzy Beetle is bouncing endlessly on a spring in the background.
Mini-Neckies appearing, on
A flock of Mini-Neckies flies by from one side to the other.
Pak E. Derm is walking back and forth behind the trees.
Jimmy T. appears during the Taunt! microgame.
A Geemer appears below as it walking around.
King Dedede appearing, on
King Dedede can be seen flying across the stage in the background, from the left side to the right.
A group of three Bronto Burts can also occasionally be seen flying in a wavy pattern in the background, from the right side to the left.
Magnemite and Beldum can be seen in the background during one of the stage transformations.
Butterfree and Moltres can occasionally be seen flying across the stage in the background.
Giygas appears all throughout the foreground and background, moving endlessly across the stage.
Red Bulborb and Cloaking Burrow-nit appearing, on
Captain Viridian is seen on the Nintendo 3DS screen during the VVVVVV game, changing the stage's gravity.
The Eggrobo can be spotted flying in the background from one side to the other.
The four ghosts — Blinky, Pinky, Inky, and Clyde — roam across the maze in the background.
A huge flock of bats are seen flying in the upper part of the stage.
The four fiends — Tiamat, the Kraken, the Lich, and Marilith — float by in the background. They are rendered in still images and do not move at all other than scrolling from side to side.
Vegeta, Trunks, and Gohan appearing, on
Chōji Akimichi is seen sitting at the Ramen Bar, eating a lot of ramen.
Gaara is seen left to the Ichikaru Ramen Bar, bending some sand.
Hinata Hyūga will occasionally lean out from the right side of the Ramen Bar.
Itachi Uchiha teleports in to the plateau on the background, to later teleport out.
Rock Lee is seen doing one-handed push-ups in front of Ino's flower shop.
Shikamaru Nara can be seen snoozing on the Ramen Bar's rooftop.