Nothing is known of Alilia's origin. There are many stories and descriptions of the greater deity within the religion dedicated to her called the Wills. In those stories Alilia is often described as having strange attributes not seen anywhere else on Ilderon, and powers not limited by the typical limitations that plague the other gods of Ilderon. According to some histories, Alilia herself was the first being to ever kill a fellow god and introduce death into the universe which letting her claim domain over all creation, including death. According to history taught by the Wills and Daranthel, Alilia left the material plane of Ilderon to dwell in her eternal realm of Providence.

For more information see History.

Before Alilia departed the world she left a sliver of her power behind in the form of the deity Emira. The goddess taught the mortal races of her matron, Alilia, and the religion known as the Wills of Alilia was formed. The Wills instructs mortals on how to treat creations and foster their ability to create.

Followers of the Wills are broken into two religious sects, but both sects believe in Alilia as the supreme god of everything. Alilia's followers are vast and varied. Among them are both the most ferocious soldiers and most compassionate acolytes. The less studied among them misrepresent Alilia as the goddess of life, when it was Emira who was tasked with shepherding the mortal races.

Ilderon is a massive plane that is simultaneously connected to Alilia's domain. While many gods of the world walk Ilderon's physical plane, Alilia is said to always reside in her domain known as Providence. Daranthel teaches she regrets having introduced death to the universe and works to create a world free from death, sadness, and endings. Many serii and dorii believe that when they reach the end of their life, if they have fulfilled their purpose, they will join the goddess in Providence.

Alilia is described to care deeply about all of her creations. Very few beings remaining on Ilderon have actually had a chance to interact with the reclusive deity apart from the remaining old gods (Emira, Renaltuh, Gendoi, Deldeth, and Demdeth). In the accounts recorded from Emira's spoken words, Alilia is very sporadic, impulsive, and unyielding. She does as she wills without any council or advice from any other being or deity. The only god that can travel between the planes of Ilderon, the Bridge, and Providence freely is Renaltuh--and thus the Gatekeeper is often theorized to be the only one to speak regularly with the goddess.