5. Orochimaru (Naruto)
The characters from Naruto who are appearing in Jump Force are sorely lacking in villain representation, with Kaguya Otsutsuki being the only true antagonist of the group. Kaguya is also a divisive figure among the fanbase, due to how late she shows up in the story and how quickly she is defeated. All of the members of Akatsuki would make for great characters in Jump Force, but if there was one villain slot that should go to a Naruto villain, it should be Orochimaru.
Orochimaru served as the main antagonist throughout the first half of the story of Naruto, where he tempted Sasuke to the dark side in order to try and steal his body. Orochimaru possesses a number of snake-based techniques, including the ability to summon a giant serpent in battle, as well as being an able swordfighter and possessing a range of dangerous jutsu that could be used at both short and long range.
4. Senku (Dr. Stone)
Dr. Stone is one of the best new series in Weekly Shonen Jump, but it has yet to find a mainstream audience due to how it hasn't been adapted into an anime. The story of Dr. Stone involves the population of Earth being turned to stone by a mysterious flash of light. A young scientist named Senku is one of the few people to break free of his petrification, but it takes several thousand years to do so.
It's up to Senku to restore modern society while only having access to caveman tools, while another faction led by warriors opposes his plan, as they want to create a society where only the strong may rule over others. Dr. Stone is due to receive an anime in July, so it would make sense for Senku to be a DLC character in Jump Force around that time. Senku could fight using a mixture of gadgets and traps, rather than being a physical warrior like the other characters in the game.
3. Admiral Akainu (One Piece)
One Piece is the best-selling manga of all time and has eclipsed Dragon Ball in popularity, which means that we will almost certainly see a One Piece representative in the DLC for Jump Force. It's tempting to say that another member of the Straw Hat Pirates would be added to Jump Force, but there is only one villain representative from One Piece in the game in the form of Blackbeard, which means they may add another.
Admiral Akainu might be the most hated antagonist in One Piece, due to how he slew Luffy's brother during the Paramount War Arc. Akainu has the ability to create and transform into magma, which gives him a devastating range of moves by default, as he can fire bolts of lava at the enemy or run his hand through their chest, just like he did to Ace.
2. Seto Kaiba (Yu-Gi-Oh!)
Jump Force has a Yu-Gi-Oh! representative in the form of Yugi Muto, who summons Duel Monsters to fight in his place. Yugi can call on the help of the likes of the Dark Magician and Slifer the Sky Dragon to aid him in battle. It's odd to see Yugi Muto in a game where he cannot be challenged his rival - Seto Kaiba.
Seto Kaiba was one of the most popular characters in the Yu-Gi-Oh! anime and manga. Kaiba was able to become one of the greatest Duel Monsters players of all time and he didn't need the help of any magical artifacts to do so, unlike Marik, Pegasus, or Yugi.
Jump Force has already established that a Duel Monsters player can be a viable character, which means that there is nothing stopping them from adding Seto Kaiba and allowing him to summon his Blue-Eyes White Dragons and Obelisk the Tormentor as part of his repertoire of attacks.
1. Jiren (Dragon Ball Super)
Jiren has technically never appeared in the pages of Weekly Shonen Jump, but he has appeared in V-Jump magazine, which runs the monthly Dragon Ball Super manga series and is owned by the same company, so he still meets the criteria to appear in Jump Force.
There isn't much in the way of Dragon Ball Super representation in Jump Force outside of transformations and if any character that is unique to Dragon Ball Super is going to make it in, it's Jiren. Jiren is an incredibly powerful alien warrior from Universe 11, who took on some of the most powerful characters in the series during the Tournament of Power Saga. If any new Dragon Ball character is going to make it into Jump Force, then it will most likely be Jiren.