The DC Extended Universe is the shared universe of multiple movies centering on several iconic characters from DC Comics. There are 3 films so far with more on the way, as well as an upcoming TV show called Krypton which will share continuity with the films. The franchise is DC's answer to the Marvel Cinematic Universe.
Power of the Verse
Nowhere near as strong as their comic book counterparts, however the franchise is relatively new and thus has a lot of room to grow. Most members of the Justice League, as well as most villains, are on Island level attack potency. Most character on the verse are Massively Hypersonic+, and there are some High 6-A feats for the top tiers.
Supporters and Opponents
Green Lantern Corps
Justice League Dark