This recent spread of the recent issue of Shonen Jump previews two new playable characters: Vongola family boss Tsunayoshi Sawada from Katekyo Hitman Reborn! and delinquent demon contractor Tatsumi Oga from Beelzebub. The two will be accompanied by their respective partners, Reborn and Baby Beel, respectively.
The bottom-right part of the page confirms the appearance of Gintama's Kagura and Sadaharu as a support unit.