Earth-251 is the universe that the BTFF Cinematic Universe takes place in.
The BTFF Cinematic Universe (BTFFCU) is a film franchise and shared fictional universe that is the setting of superhero films independently produced by BTFF Cinematic Studios (a joint collaboration of four users) with inspiration taken from the Ben 10 Franchise. Unlike most projects, the franchise is separate from the characters of the canon franchise, but includes elements such as the Anur System, Anodites, and Appolexxians.The shared universe of the films, was established by crossing over common plot elements, settings, cast, and characters.
The Cinematic Universe was announced on December 31, 2012. The original plan was to complete Phase 1 by the end of the year, but due to a a high popularity of the project, it was sped up and the final movie of the phase, entitled Heroes, is scheduled to be released this July. Phase 2 was confirmed on May 21, 2013. Three of the original four films were confirmed to have sequels, and two new films were confirmed, one of which was originally supposed to be in Phase 1 but was later delayed. The six-film Phase 2 will ultimately culminate in Heroes 2.
In Winter Fanon Con 2014 (December 26–28), Sci100 announced that Earth-251 would end with Phase One, thus meaning Phase 2 was canceled.
On May 21, 2013, a general timeline of Phase 1 was confirmed. The Black Knight's main time period is the first chronologically, followed by The Hunter's main time period. Afterwards comes the ending section of the Black Knight. Energy Revolt and then Tiger Rage follow this. The ending of The Hunter is second to last and finally Heroes is the final piece of Phase 1.
The Capital - North City - South City - Raia City - The Village of Epiphany - The Village of Soran - The Soran Woods - Area 52 - North City Fortress - Charles Inc. - South Jazz Club - The Black Knight's Bunker Base - Lord Darzon's Mansion - Midpolis - The Capital Ship