The Black Wisps have a red jagged mouth-like recess stretching across their heads. Stemming from the bottom of their heads, they have three round tentacles with a slight rounded point at the end of them. They also appear to have two round and puffed cheeks on the sides of their heads.
Unlike other Wisps, the Black Wisp are only available in Sonic Lost World by obtaining it from the Miiverse. It can also be rewarded to the player by completing the Nightmare Zone, which is available in Deadly Six (Bonus) Edition or the Yoshi's Island Zone DLC of Sonic Lost World.
Team Sonic Racing
In Team Sonic Racing, the Black Wisps appear as Item Box power-ups on the game's race tracks. In gameplay, the Black Wisp power-ups allow the user to throw manifestations of the Black Bomb on the race track, which can explode in the face of rival racers.
In the comic tie-in, a Black Wisp was used by Shadow to attack Sonic during their teams' race on Planet Wisp. Another Black Wisp was soon after used during the same race by Omochao as a part of a collaboration attack on Dr. Eggman, who had intruded on Team Sonic and Team Dark's race.
Powers and abilities
The Black Wisps are able to levitate in midair at will, which serves as their main method of transportation.
The Black Wisps are able to generate and store their own unique variant of a powerful energy known as Hyper-go-on inside their own bodies, which is their life source. It is unclear to what extent they can use their own Hyper-go-on.
The Black Wisps are able to pass on a fraction of their Hyper-go by phasing into the recipient. When organic beings or robots receive their Hyper-go-on, they can transform into the Black Bomb which can induce explosions. Alternatively, the Black Wisps are able to manifest the Black Bomb form themselves without phasing into a recipient.
The Black Wisps share some similarities with the Purple Wisps and Violet Wisps from Sonic Colors, as they all have dark-shaded colors and jagged mouths as opposed to eyes. Any connection between the Black Wisps and Nega-Wisps is unknown.
Due to the shutdown of Miiverse and eventual possible discontinuation of WiFi support for the Wii U, there will likely be a point in time where this Wisp will no longer be available at all for people who own the regular game on Wii U.
It is still obtainable in the PC version; provided the player has not completed the missions rewarding them with one or has the Nightmare Zone DLC, which can be easily obtained upon completing it.