Daiza is the bastardization of Dianna which was a common name I used to use back during the First Era of Free MMOs. (We're talking Rubies of Eventide here). By the time I started World of Warcraft again, Dianna was taken so I retyped it and somehow ended up with Daiza.

Auvec was the auto generated family name of my Star Wars Galaxies player, Ovvou Auvec of Ahazi. When that game punched us in the nuts following the NGE, I quit but every game that allowed me to use a surrname, I used Auvec. (for example when im feeling particularly RP-y, my WoW character's full name is Daiza Auvec).

Thus that carried over into this game.