Maiar Name Generator

Named Maiar include Eönwë, Ilmarë, Ossë, Uinen, Salmar, Arien, Tilion, Melian, Olórin (Gandalf), Curumo (Saruman), Aiwendil (Radagast), Alatar and Pallando (the Blue Wizards, also called Morinehtar and Rómestámo), Mairon who became Sauron, the Balrog Gothmog, the werewolf Draugluin and the vampire Thuringwethil. Early drafts add names such as Fionwë, Lungorthin and Tevildo.

Both. In Valinor the Maiar were known by Quenya names like Olórin, Curumo and Mairon. In Middle-earth the Sindar and Men gave them new names: Mithrandir and Curunír are Sindarin, Gandalf and Saruman are Mannish (modelled on Norse and Old English), Tharkûn is Dwarvish and Zigûr is Adûnaic. Corrupted Maiar are usually remembered by harsh Sindarin names such as Gorthaur and Gothmog.

Use the Sindarin roots Tolkien used for evil things: gor (horror), thaur (abominable), raug (demon), gûl (sorcery), draug (wolf), morn (black) and naur (fire), with hard endings like -oth, -ath, -nir and -dur. Gothmog, Gorthaur and Draugluin follow that pattern, and names like Morlhach, Naurgoth or Ghâshraug fit beside them. Black Speech fragments (ghâsh, búrz, dûr) work for Sauron's own servants.

Yes. The Quenya-style names work well for celestials, angelic servants and elder spirits in any setting, the Istari-style names suit mysterious wandering wizards, and the Balrog and Úmaiar names make strong demon or fiend names. Only the canon names (Olórin, Melian, Sauron) are tied to Tolkien's world; the original ones are free to use in your own.