1.New dimensions
DragonBall is now a multiversal franchise. We've met Gods, Angels, and even Omni-Kings from different universes in Dragon Ball Super. Dragon Ball Super: Broly also introduces a new dimension that rips open when Gogeta and Broly power up and attack each other. This dimension-breaking power is similar to Super Buu's Vice Shout in Dragon Ball Z. The film references this ever-expanding universe several times, including what might be the first usage of the word “multiverse” to describe Dragon Ball. The colorful world that rushes past Gogeta and Broly during their fight could also be a new, unnamed realm in the Dragon Balluniverse.
2. GOGETA DEBUT
Dragon Ball Super: Broly marks Gogeta's first canon appearance in the storied Dragon Ball universe. He appears just as Goku and Vegeta are about to be overpowered by Broly. Their combined strength makes Gogeta a worthy opponent for the Legendary Saiyan. Gogeta's first canon appearance has several subtle nods to the history of the characters and the manga. Gogeta wears pants similar to Gotenks, and he briefly poses in Goku and Vegeta's legendary fighting stances in one scene. He also shifts back and forth between Vegeta's cocky attitude and Goku's respectful demeanor. Gogeta almost destroys Broly with a Transcendent God Kamehameha, but a wish to Shenron saves the Legendary Saiyan just in time.
3.oozaru power
The supes Saiyan oozaru form has not made an official appearance since early Dragon Ball Z, but it returns in a unique way in Dragon Ball Super: Broly. Viewers might remember the Super Saiyan 4 form from Dragon Ball GT, but this transformation is not considered canon. However, in the new movie, Broly shoots a Gigantic Breath attack similar to the mouth energy wave used by Oozaru. Broly does not need to fully transform into the Great Ape to use this attack. Instead, he is able to harness the energy while in human form. This small detail might be a reference to Dragon Ball GT's Super Saiyan 4 form, or it could just be another example of Broly's legendary strength.
4. KAKAROT
Goku refers to himself as “Kakarot” near the end of Dragon Ball Super: Broly. This is the first time that Goku has ever used his original Saiyan name, even though Vegeta and Raditz called him Kakarot in previous seasons. Goku tells Broly to call him Son Goku or Kakarot, and some fans have questioned the change. Unlike the other Saiyans, Goku's journey has always been about increasing his strength and protecting his home. It is possible that Goku is only using his birth name to gain Broly's trust, but it may also be a sign that he is showing respect to his Saiyan heritage and strength
5.UlTRA INCTINCT
Goku has used Ultra Instinct against characters like Jiren and Kefla in Dragon Ball Super. However, he doesn't use the technique in the Dragon Ball Super: Broly movie... or does he? During the intense battle with Broly, Goku's eyes seem to flash with the silver-blue Ultra Instinct color. His hair also turns white for an instant. It is unclear if the scene was supposed to be Goku's failed attempt at using Ultra Instinct, or if it was merely an Easter egg for perceptive fans. Ultra Instinct is a relatively new technique in the world of Dragon Ball, but it is definitely one of the strongest. It allows users to unconsciously react to enemies and attack them at the same time.
