Two other characters will join Kaiba at the DLC's launch
Bandai Namco revealed an update schedule for JUMP FORCE, including plans to introduce Seto Kaiba from Yu-Gi-Oh! as a DLC character. He'll be available in May along with two other characters as paid content, and you can see how he looks in the game in his first official screenshot below.
As the roadmap at the top says, the updates start in April with the free addition of the Clan feature, Vertex event, and new avatar costumes. Beyond that, players can look forward to the following:
Paid DLC: Seto Kaiba + 2 other playable characters and avatar costumes
Free Update: Online Link Mission, Raid Boss Event, New World Tournament Stage
Free Update: Arena Event, New Avatar Costumes
Free Update: Tournament Event, New Avatar Costumes
Paid DLC: 3 New Playable Characters and Avatar Costumes/Skills
Free Update: New Avatar Costumes, New Valley of the End Stage
All the paid content will be available to purchase separately or as part of the season pass.