Ashe is the only champion to have exactly 1.0 scaling for both AD and AP on all her abilities with AD/AP ratios; her attack damage and ability power are added without multiplication to the damage output of her Volley and Enchanted Crystal Arrow, respectively.
Ezreal has 1.0 AD scaling but has varying AP scaling.
Ashe was one of the champions chosen for the Ionian pool available during the 2010 Ionian Versus Noxus Grudge Match. She was one of the selected champions.
Ashe's ultimate is very similar to Mirana'sArrow skill, except that Ashe's arrow can travel across the whole map while Mirana has a shorter range and smaller hitbox.
Ashe's bow belonged to the ancient queen of Freljord, Avarosa.
Ashe currently holds the most number of taunts in the game. She has 3 default taunts and 3 special taunts for both Sejuani and Lissandra, combining a total of 9 taunts.
Ashe appears to be ambidextrous. In her Classic, Freljord, Sherwood Forest and Woad skins, she holds her bow in her left hand, but in her Queen and Amethyst skins, she holds her bow in her right hand.
Sherwood Forest Ashe is a reference to Robin Hood.
Woad Ashe references the medieval Picts tribes, also known as the "Woads".
Queen Ashe is a lore reference to her role as the leader of Freljord.
Amethyst Ashe is likely a reference to Amethystos, a maiden that was changed into amethyst in Greek mythology.
Amethyst is a violet variety of quartz often used in jewelry.
The Woad Ashe artwork bears a strong resemblance to Guinevere from the 2004 movie King Arthur.
The Chinese version of Ashe's original skin is the background image of the "Offense" section in the mastery pages.
Relations
Ashe is close friends with fellow League champions Anivia and Nunu.
After Ashe became the Queen of Freljord, she personally appointed Nunu as Freljord's League Emissary.
Ashe is married to Tryndamere, though she states that this is not for romantic reasons but for political ones.
Outside the game, Ashe and Tryndamere's relationship is possibly a private Riot reference. Tryndamere is the nickname of their president, Marc Merrill, whose wife's name is Ashley (as revealed in this thread by Merrill).
Ashe and Tryndamere have struck a business partnership with Gragas, selling him ownership of Freljord's Avarosa Iceflow glacier.
He had also, apparently, solved the problem of a unification of a lesser tribe with the Avarosan tribe by getting everyone drunk and drowning their troubles away.
Ashe is in direct conflict with Sejuani, who opposes Ashe's claim as the Queen of Freljord.
Ashe is a distant relative to Sejuani as they both descended from two of the three legendary princesses, who were sisters to one another. Ashe descending from Avarosa while Sejuani from Serylda.
Ashe met with Quinn and Valor while the two were on a scouting expedition into Freljord.
Ashe is in an alliance with Lissandra although, Ashe has no knowledge that she is the Ice Witch.
Lissandra is one of the three legendary sisters, making her an ancient ancestor of hers.
The Lyte's quote to her; "You bear a striking resemblance to Avarosa!" hints at the possibility that Ashe is a direct descendant of hers.
This is further supported by the fact that Ashe was lead by a great hawk to Avarosa's grave where she found the true ice bow she now uses in the Fields of Justice.