These Istari were only hinted at in The Hobbit and The Lord of the Rings, where Gandalf and Saruman, respectively, mention that there are five Wizards. However, other writings of Tolkien have more to say: In Tolkien's Of the Rings of Power and the Third Age it is revealed that aside from Curunír (Saruman), Olórin (Gandalf), and Aiwendil (Radagast), there were "others of the Istari who went into the east of Middle-earth, and do not come into these tales." Tolkien also writes in Unfinished Tales that the two Wizards were sent to the East. Their names in Valinor were Alatar and Pallando. Alatar was a Maia of the Vala Oromë who chose him to go to Middle-earth. Alatar asked his friend Pallando to join him on his mission.
The time that they arrived in Middle-earth is uncertain. In Unfinished Tales, Tolkien wrote that the five Istari came to Middle-earth together in T.A. 1000. However, in The Peoples of Middle-earth, they are said to have arrived in the Second Age, around the year 1600, the time of the forging of the One Ring. Their mission was directed at weakening Sauron's forces in the eastern and southern parts of Middle-earth whereas the other Istari were focused on the western regions.
It is also uncertain whether they failed in their mission, but it seems most likely. In Unfinished Tales Tolkien writes that, "indeed of all the Istari, one only remained faithful," referring to Gandalf. Also in letter 211, he said, "what success they had I do not know; but I fear that they failed, as Saruman did, though doubtless in different ways; I suspect that they were founders or beginners of secret cults and 'magic' traditions that outlasted the fall of Sauron".  However, in a text found in The Peoples of Middle-earth, alternate set of names are given, Morinehtar and Rómestámo (or Rome(n)star), "Darkness-slayer" and "East-helper". It is not clear whether these names were intended to be replacements for Alatar and Pallando, or whether they had a second set of names (for instance, their names used in Middle-earth).
The name Romestamo means East-helper, from the Quenya word romen, meaning uprising, sunrise, east.
Portrayal in adaptations
Peter Jackson's Hobbit Trilogy
In The Hobbit: An Unexpected Journey, Gandalf is asked by Bilbo Baggins about the names of the blue wizards and replies "I've quite forgotten their names." This is because the names "Alatar" and "Pallando" do not appear in The Lord of the Rings or The Hobbit books and therefore the films did not have the rights to use them.
In the game Middle-earth: Shadow of Mordor, a Weathered Azurite Figurine can be found in the north-western part of the Sea of Núrnen. In the game their names are not said, but the description of the artifact implies the two wizards are Alatar and Pallando. In the memory of this artifact is said:
"See, there were two of them, and they both came in from the road with a hard look in their eyes, as if they'd traveled too far and seen too much. They were Wizards, true, both of 'em caked in dust, and when one's talk he'd stop to think and there'd be the other to finish right up, like they had one brain and two mouths. It was creepy for sure, but neither seemed to notice. I heard them say they were hunting the darkness. Darned if I know if they found it. But I guess those fellows can find trouble when they're looking for it."
|Foreign language||Translated name|
|Albanian||Magjistarët e Kaltër|
|Belarusian Cyrillic||сінія чараўнікі|
|Bulgarian Cyrillic||Сините Магьосници|
|Chinese (Hong Kong)||藍色巫師|
|Faroese||Bláur gandakallur ?|
|Fijian||Daucakamana ena Karakarawa|
|Filipino||Bughaw na Manggagaway|
|Haitian Creole||Sòsye Ble|
|Hebrew||קוסמים הכחולים (Blue Wizards)
איתרין לואין (Ithryn Luin)
|Irish Gaelic||Draoi Gorm|
|Kazakh||Көк сиқыршылар (Cyrillic) Kök sïqırşılar (Latin)|
|Kurdish||Sêrbazên Şîn (Kurmanji Kurdish)|
|Macedonian Cyrillic||сина Визардс|
|Mongolian Cyrillic||Цэнхэр ид шидтэнгүүд|
|Persian||جادوگران آبی (Blue Wizards)
ایترین لوین (Ithryn Luin)
|Serbian||Плави Чаробњаци (Cyrillic) Plavi Čarobnjaci (Latin)|
|Tajik Cyrillic||Кабуд ҷодугарон|
|Ukrainian Cyrillic||Сині чарівники|
|Uzbek||Кўк Сеҳргарлар (Cyrillic) Ko'k Sehrgarlar (Latin)|
|Vietnamese||Phù thủy Màu xanh|
|Yucatec Maya||Magos Azules|