This is a page specifically to update anything and everything Arena Ferox related in Super Smash Bros 4, from screenshots to official movesets, etc. Some of the content is subject to change depending on what gets updated. Feel free to help out in case I happen to not be around on a certain day (or days) by commenting below. I’ll attempt to update it as soon as I can.
Note that since I just recently decided to upload the images of stages, there are no dates for the ones listed below. There will be dates for more stage images from this point forward.
Name: Arena Ferox
Game Debut: Fire Emblem: Awakening
Smash Debut: Super Smash Bros 4 (3DS)
Summary of Arena Ferox (The Fire Emblem Wiki): Arena Ferox is a location in Fire Emblem: Awakening. Located in Regna Ferox, it is where the Khans hold fighting tournaments to determine who will be the full ruler of Ferox. This is Chapter 4: Two Falchions, and the second time you meet Masked Marth. Also the time where you face off against Masked Marth. You can get Lon’Qu at the end of the chapter.
Observations of Arena Ferox (As of 11/27/13): Looks like it’ll be either the same as Super Smash Bros Brawl’s Castle Siege, or maybe more like Pokemon Stadium, since there seem to be active hazards that pop on the stage. But chances are it’ll be closer to Castle Siege.