User blog comment:Llama919/Possible Beast Titan Identity?/@comment-5774380-20150618200119

Erwin's father was seen being tortured by Djel Sanes and Ralph in chapter 55, so he certainly is dead:



No offense, but honestly, I don't pretty much like theories about new characters being parents, lost twins or clones of similar looking characters, or dead characters revived. These kind of theories are very frequent across all Internet and almost 100% of the time are very wrong.

I'm almost sure that the Beast Titan is a completely new character from the Homeland with very little connection, if any, with the people within the Walls.