1. He was formerly called Rayshen, but I changed the spelling to Rhazen to match the rest of his family. Keep in mind the z is pronounced as "sh" for everyone except Rhozen, who is pronounced as it's spelled. This is deliberate, but you can pronounce it either way and they won't really mind. Rhazia (Ray-shah) and Razia (Ray-zyah) may get confused if they're in the same room though.
2. He looks short, but he's not really. Most Rizus appear short, but he's actually taller than Wolfen. Rhazia is still taller than him though.