User blog comment:Imhungry4444/Fairy Tail Wikia Podcast 10/19/13/@comment-24039250-20131022193305

I feel that Makarov, his old guild members (Blue Pegasus and Quatro Cerberus), Sabertooth (FT Fanboys),some of Lamia scale and Mermaid heel, and Jellal and Meredy will team up against Tartaros. Also later in the arc Gildarts and the three Dragons are going to show up.