This week’s May 2016 issue of Saikyō Jump in Japan (released 01 April 2016) has announced that Frost and Botamo of Dragon Ball Super‘s Universe 6 will join the Nintendo 3DS game Dragon Ball Z: Extreme Butōden as Z-Assist characters in a forthcoming update.
The quick advertisement focuses on Frost, who is seen delivering a Death Beam-like attack, with a promotional splash stating, “The Evil Emperor of Universe 6 Descends!!!”
The game’s most recent patch in Japan (Version 1.3.0) added yet another four Z-Assist characters on top of the ever-growing list.
Dragon Ball Z: Extreme Butōden launched in Japan 11 June 2015. First-press copies of the game come packed with bonus content, including a downloadable version of the Super Famicom game Dragon Ball Z: Super Butōden 2 (previously included as a part of the J-Legend Retsuden compilation game; albeit now with replacement music). Arc System Works developed the game for Bandai Namco. The developer previously worked on the Bukū… / Supersonic Warriors games on the Nintendo GameBoy Advance and DS.
Thus far, none of the game’s patches have been released or localized outside of Japan.