Usually, it's their name and an "ium" at the end of it. It's really not as impressive as you're thinking.

[Fern would absolutely hate that forever and probably set fire to it. Still, that's a good name. It brings a soft smile to his face. Raps was the nickname Cassandra used for her- before everything went down the pan with them. And maybe, maybe one day they could get back on track again as he did with her. It's a good sign of hope- and lord knows Varian could use some more of that in his life. ]

Rhodium Raps. [He tests it out a little, waving it in the air.] You know, I think that fits.