Blue dragon Blue dragons are associated with cold and earth . The term " dragon " is sometimes used instead of the term " mature " to describe the adult phase of a blue dragon ' s lifecycle , between adolescence and becoming a wyrm . They are 100 - 500 years old . Description . Blue dragons are regal creatures , their posture and facial expressions expressing wisdom and intellect . They are creatures of ice and water , often found in cold regions and preferring to keep to themselves . They are studious , enjoying both literature and scholarly texts , and study any bit of knowledge or trivia that they come across . These dragons are best known for altering their forms and integrating into other societies in order to learn new technologies , spells , and crafts . Blue dragons are peaceful creatures , but very territorial . Once a blue dragon has claimed a certain territory , woe to any — even dragons of their own flight - who enter into that area without permission . The mighty dragon bursts from the frigid waters , its muscular form covered in glistening scales . It has patterned cobalt markings across its neck and upper body , and its wings fold almost invisibly against its sinuous body . Blue Dragon Society . The blue dragons ’ Aspect is the massive blue wyrm known as Malygos , the Lord of Magic . He is said to have established magic itself and created all the spells that set the sky and earth into motion . While he is not revered as a god , for blue dragons see no godhood in scientific fact , he is considered the greatest scientific mind ever to have existed in the multiverse . They have high magic resistances and can withstand many magical attacks . A blue dragon does not hesitate to attack if his territory is disturbed or invaded and is somewhat xenophobic . A blue dragon can be as violent and destructive as any black . The blue dragonflight was almost driven to extinction by Deathwing , and so blue dragons are rare and difficult to find . They are native to Northrend , remaining close to the Dragonblight , and once communed with the dead there to ensure that each draconic spirit made its way into the Beyond . Although the Scourge controls much of Northrend , the blue dragons still visit Northrend . Combat . Blue dragons are not cruel beasts , preferring a quick kill for enemies and prey alike . They often use their abilities and spells from afar , camouflaging their approach in fog and other foul weather to gain the advantage of surprise . They are excellent tacticians and attempt to damage or disable any opposing spellcasters before they commit to a physical attack . Blue dragons prefer to fight from the air , using spells and breath weapons to their fullest . Even when an enemy is routed , blues seldom land , instead swooping overhead to further panic their prey . Blues do not land unless there is an immediate need or unless all opposition is destroyed . Blue dragons are slim and regal , and the glow of intelligence shines brightly in their eyes . Blue dragons are no smaller than the average dragon , but they tend to be thin and sinuous in form . Most blues have scales the color of ice , but some have scales that resemble the sky or a type of gem . Some dragons are named or nicknamed after a gemstone type that their skin resembles . Many dragons also mark their scales with eldritch runes , which serve the same function as tattoos do for humanoids , as well as potentially having magical effects . Male and female blue dragons are nearly indistinguishable to most humanoids , but according to some ancient texts males tend to have straighter and thicker horns , while the female ’ s horns tend to look more rounded . Trivia . " Azure " and " cobalt " is usually associated with the blue dragons .