Broly enters the official "Dragon Ball" canon.
Broly debuted in Dragon Ball Z: Broly – The Legendary Super Saiyan 25 years ago, but he has been existing on the outer rim of Dragon Ball existence ever since. Yes, he has been included in several video games, a couple movies, and several spin-off properties, but Broly was never made canon. He was a cool guest feature that never got his full respect. Now, Toei Animation and Dragon Ball creator Akira Toriyama have decided to bring Broly into the series' main universe.
The trailer for Dragon Ball Super: Broly debuted at San Diego Comic-Con today, and it's intense. It appears that any old stories of Broly are being left in the past, and a new origin will be imparted upon the legendary Super Saiyan. The trailer dubs him as an "Unknown Saiyan," and Goku, Vegeta, and even Frieza battle Broly in the trailer. Goku's Super Saiyan Blue form is on display, while Vegeta settles for his Super Saiyan 2 form. Golden Frieza makes an appearance, and gets beaten around, which showcases Broly's true power. At the trailer's conclusion, we see Broly finally power up to his Super Saiyan form in a field of green light that appears to destroy everything around Goku. Dragon Ball Super: Broly is slated to drop in January 2019.