Even though Dante is partnered with Demitri from Darkstalkers, Lady still appears in Project X Edge. She’s a solo character so you can team her up with Dante, the .hack team or another unit. You can call Lady into a skirmish at anytime. More about the five character battle system here.
Rindou from God Eater also appears as a solo character.
Project X Zone comes out on October 11 in Japan.