Flaxans are a race of Inter-dimensional beings that were set on conquering planet Earth and killing its humans. Three times, they tried to invade Earth through a portal (invented by them) and began killing numerous civilians.
In the first attempt of the invasion of Earth, the Flaxans teleport into the downtown area of the city, where they begin killing every human they see. The police attempt to fight back but are easily outgunned and outnumbered by the Flaxans. Invincible spots one of the Flaxans about to murder an old woman and throws a piece of debris at it, hurting the Flaxan, who will later be one of the leading generals of the later invasions. Invincible saves the old woman, but due to tripping over while flying, the woman's legs are bashed and she is in critical condition. Right after this, the injured Flaxan gets into one of the tanks and aims at Invincible. However, Atom Eve saves Invincible, deflecting the laser. The rest of the Teen Team arrives, but they are outnumbered by the Flaxans, and cannot fight them off. However, the Flaxans start to die of old age as the time in their planet and in Earth is very different. This leads to the death of large amount of the invasion force. The remaining Flaxans escape through the portal they came out of, including the Flaxan injured by Invincible.