Kalecgos: Days of Nothing | Complete Lore(Pre-Dragonflight)

Kalecgos is the former Aspect of the blue dragonflight, after the death of Malygos. In his preferred mortal guise, he is known as Kalec and appears as a half-human, half-elf with blue-black hair,[6] a form that appeals to him because it represents a melding of two worlds, just as Kalec himself feels that he is a blend of the worlds of dragons and humans.[7] Due to the blues being most in tune with arcane magic of all the dragonflights, Kalec has the powers of a sorcerer and the strength of a warrior. Even after losing his Aspect abilities, he is one of the greatest mages in Azeroth's present and past,[8] with Kinndy Sparkshine describing him as likely being superior to any of the mages from the short-lived Azerothian races.[9]

Prior to the Nexus War, Kalecgos was Malygos' investigator and became involved in the search for residual energies of the Sunwell. He opposed Malygos' war against mortal spellcasters and became the blue dragonflight's ambassador to the Wyrmrest Accord.

During the events of the War against the Lich King, Kalec decided to not stand with Malygos. He allied himself with Alexstrasza and the Wyrmrest Accord to help stop his former master.

With the rise of Deathwing during the Cataclysm, Kalecgos was named the new Aspect of Magic and aided his fellow Aspects and the mortal adventurers in the battle with the Aspect of Death. After his defeat the blue dragons went their separate ways; Kalec joined the Kirin Tor and took up residence in Dalaran to pursue a relationship with Jaina Proudmoore. Though Jaina left Dalaran at the onset of the Burning Legion's invasion of Azeroth, Kalecgos remained, becoming a member of the Tirisgarde as well as the ruling Council of Six.