|The subject of this article has no official name.|
It is a fan-given name as substitute for lack thereof, and should not be considered as part of the Attack on Titan universe.
Mr. Arlert appeared to be a very courageous man, willing to risk his own life in order to escape beyond the Walls. The fact that he was able to design a hot air balloon that would carry him and his wife beyond the Walls indicates that he was a remarkably intelligent man.
- Mr. Arlert's design was debuted in the Attack on Titan Character Encyclopedia.
- Mr. Arlert shares a birthday with Franz Kefka.