|This article contains information of a formerly confirmed feature.
The original source that confirmed the subject has otherwise become obsolete, outdated or deprecated and has yet to be re-confirmed by an official modern source.
A cannon is an object that was originally planned to appear as a level element in the Adventure mode of Super Smash Flash 2. It was initially revealed in the fifth Smash Flash DOJO!!! prior to its sixth renovation, but along with Adventure, its current fate is a mystery.
Similarly to Warp Pipes, players can enter the cannon to get teleported to another area. According to the DOJO!!!, it was supposed to appear in Mushroom Kingdom, and entering it would lead the character to the level's boss fight.