Not sure if this topic has been brought up before but I was watching the hour long Halo 5 Beta Gameplay and I noticed that the really ugly energy sword looks like it’s made for Humans. Specifically, the handle is made for Human hands instead of the Sangheili’s long fingers. Take a look around 14:20 and you’ll see what I mean.
it’s the arbiter’s personal sword. It was made for sangheili