Angry Birds Epic/Unused Content

Piglette
In Angry Birds Epic, there are unused sounds called "piglette_(something)", most likely for a piglette. Most of the sounds sound like Stella.

Developer Console
A Developer Console does exist in the game's code, Look in the Games DeveloperConsole.cs file. It is currently unknown how to enable it and will likely stay hidden to prevent online cheats.

Beta Pillar
When the game was released, the Pillar on the top used to have a Mighty Eagle head. In later versions, it got changed to Red's head.

Beta Knight Red
Previously, the Knight-class Red had a green plume on his helmet instead of red. And on one of the posters, the feather was even yellow and gold. In the later versions, the feather color got changed to red.