Zeref (and Sayla and Suigintou) will attempt to defend Tartaros' headquarters in Everglade, but they will eventually realize that it's hopeless and retreat, with E.N.D.'s book in tow. They'd most likely head to Fayren after that, but where specifically they go is still unknown.

Clow Reed (and Yuuko) will attempt to help refugees from Everglade and Genessia City.

Hagire Rinichirou will fight the spirits until someone drags him away, or he dies.

Red X will defer to Raven about what to do about the attack, whether they help refugees or fight the spirits.