From various media
Vanguard EX has confirmed one of the included characters is Onimaru Kazumi, the user of Shiranui from Vanguard G.
At the ending live stage, Bushiroad released the silhouette of the new upcoming hero character in Cardfight!! Vanguard
A new encounter with Kai who’s still dealing with having been Deleted
Ibuki, in the new arc, still hasn’t stopped deleting Vanguard Fighters
At the Koshien, various characters will appear, who appear to be…
Leon and the cousins
Nakagami Eru, the one shot Dark Irregulars user from Link Joker and a one shot episode from G
Mamoru Anjo, Tokoha’s older brother who uses Dragonic Blademaster.