Warning! Challenger Approaching!
The "Warning! Challenger Approaching!" screens in the two Super Smash Flash games.

An unlockable character is a character in the Super Smash Flash series that is not available at the start of the game (unlike a starter character), but must be unlocked. Unique criteria must be met in order to unlock a certain character. In both Super Smash Flash and Super Smash Flash 2, typically, the player must accomplish a particular in-game feat and once complete, a message will display: "Warning! Challenger Approaching!" with a white question mark block over the black silhouette of the unlockable character.

By completing the in-game feat and defeating the opponent in a 1-stock match, the character becomes playable. In the original Super Smash Flash, this match would always take place on Final Destination, but in Super Smash Flash 2, each character is fought on a different stage, being their home stage.

In Super Smash Flash

Character Universe Criteria
Blue McLeodGaming Clear Adventure with Blade on normal difficulty or higher.
Cloud FINAL FANTASY Complete 100-Man Melee.
Crono CHRONO Clear 3-Minute Melee.
InuYasha InuYasha Clear Adventure without losing any lives.
Jigglypuff Pokémon Clear Adventure on any difficulty with any character.
Lloyd Tales Clear Adventure with any character after having one hour of total play time.
Luigi Mario Clear Adventure with Mario on normal difficulty or higher.
Mewtwo Pokémon Clear Adventure with Pikachu and Jigglypuff on normal difficulty or higher.
Mr. Game & Watch Game & Watch Clear Target Test with all 27 other characters.
Mr. Incredible The Incredibles Clear Classic with all 13 starter characters.
Naruto Naruto Clear Adventure with all 13 starter characters.
Shadow Sonic Clear Adventure with Sonic, Tails and Knuckles on any difficulty.
Super Sonic Sonic Clear Classic with Sonic on any difficulty without using continues.
Young Link The Legend of Zelda Clear Classic with Link on any difficulty.
Zero Mega Man Clear Adventure with Mega Man X on normal difficulty or higher without using continues.

In Super Smash Flash 2

Yes This section contains information for a confirmed feature that is not currently available.

The subject was confirmed by an official source, but is not present in the current version of the work bound to appear. Instead, it is meant for a future update. Any information is subject to change.

It has been confirmed that all characters added after the initial release of Beta 1.0 will be unlockable in the full version of SSF2. However, it should be noted that in the current release of Beta 1.2, all unlockable characters are available without needing to be unlocked, in the same vein as starter characters.

Character Universe Criteria Unlock stage
Krystal Star Fox Star Fox symbol TBA
Lucario Pokémon Pokémon symbol
Pichu Pokémon Pokémon symbol Play a match in any game mode (except for Training) in which a player-controlled Pikachu accumulates at least 172% damage. Pokémon Colosseum
Rayman Rayman Rayman symbol TBA
Ryu Street Fighter Street Fighter symbol
Sandbag Super Smash Bros. Super Smash Bros. symbol Complete Classic using a random character on Normal difficulty or higher without using continues. Waiting Room
Win a match online against a player who either has unlocked Sandbag, is a developer, or has beaten a developer.[1] N/A
Simon Castlevania Castlevania symbol TBA
Waluigi Mario Mario symbol

In demo versions

These three characters were unlockable in early demos for the sake of their initial inclusion in SSF2.

Character Universe Criteria Unlock stage Version
Black Mage FINAL FANTASY FINAL FANTASY symbol Play 10 Group matches. Chaos Shrine 0.7
Captain Falcon F-Zero F-Zero symbol Win a Group match with every other character but him. Sand Ocean 0.8a
Jigglypuff Pokémon Pokémon symbol Clear all original 10 events. Pokémon Stadium 3 0.9a


Challenger Approaching screens

Early designs

Notice screens

Early designs


  • In the original "Warning! Challenger Approaching!" screen for SSF2, the silhouette of the McLeodGaming's fist logo could be seen.


  1. Meeting this unlock criteria will immediately unlock Sandbag without requiring the player to challenge it in a 1-stock match.

See also

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