Sapphirus and her Dialgia (named Sapphirus also) have bonded a lot during the years, a few months ago I traded one of my legendary Musketeer pokemon for a Reshiram with a Japanese symboled name I dunno the meaning to yet, so I could'nt rename it. Damn traded pokemon rules lol.
I made this reshiram stubborn, and isn't cuddly like Sapph's Dialga, so she gives him his space, though he's a big jealous of her Dialga as you can see, he's still slightly new to her team. If I was to name him, would be Axel most likely or Saffire...
Also, Sapph always wears her Dialga horn headgear, for fun and her fandom of Dialga. xD