Fake answer: at some point in rat history they thought that Armenian people were genetically superior and decided to take traditional Armenian surnames as their handles, but they both simultaneously and serendipitously bungled the spelling. The names should actually be “Yvian” (pronounced yiv-yahn) and “Iarwian” (pronounced ee-arh-wee-yahn)
Real answer: probably a tolkien elvish name idk
OTOH the format reminds me of having to read the pesterchum parts of homestuck, which is why I stopped reading it