It is the only character (excluding the Boss's last two forms as well as the 'plant' seen in Paradise and the Big Cube's evil forms as well as characters added in later updates) that is not unlocked once the player completes challenges after the game's Story.The only official names of this boss that is referred internally are ' Boss2' and the name of the boss level that appears in, ' Barracuda'.This boss's appearance bears some similarities to the symbol of the Illuminati, Bill Cipher, or other similar characters or icons, notably when the boss evolves into a pyramid. The level is on the shorter side and obstacles move slower and have a simpler pattern making them relatively easy to dodge.At the end of the level, the boss explodes into a shower of triangles and is never seen again in the game's storyline.

It later evolves into a pyramid during the level, attacking the player using circles, spectrum bars and triangle-shaped snakes (better known as pyramid snakes). It is a pink triangle-shaped boss with one eye on it, which often squints whenever it attacks. Its connection to the main antagonist is unknown.

It also might be connected to the triangles that the player collects throughout the game, although this may be a coincidence. It battles the player during the same level, but it is never explained how or why this boss battles the player, although it is assumed it is one of the three triangles from the so-called 'Tree of Life'. This boss is a minor antagonist that only appears in its debut level, Barracuda.

Tvtropes just shapes and beats