SRPG title for the Nintendo 3DS, Super Robot Taisen UX, has received a new trailer outlining the DLC additions that you can pick up for the title. The new DLC released last month includes challenge rule sets which once completed rewards the player as well as featuring new campaigns to complete.
As far as which characters feature in the game, the list is below.
Fafner in the Azure
Fafner in the Azure: Heaven and Earth
Juusou Kikou Dancouga Nova
Linebarrels of Iron
Macross Frontier the Movie: The Wings of Goodbye
Macross Frontier: Itsuwari no Utahime
Mobile Suit Gundam 00 the Movvie: A Wakening of the Trailblazer
Mobile Suit Gundam Seed Destiny
Ninja Senshi Tobikage
SD Gundam Sangokuden Brave Battle Warriors
The Wings of Rean
Virtual-On series Featuring Fei-Yen HD