Alysm

"I might as well die a hero as long as you remember me."

Get the coding for this profile here. Alysm is the deceased sister of Syzygy. She died in a dangerous fight that she volunteered to be in to save her sister. Like Syzygy, she is extremely kind and self-sacrificing. Despite not having a key card, she borrowed her sister's to access places she probably shouldn't have and would have been very helpful to Nikhedonia if she were still alive. Alysm also has narcolepsy, an illness that essentially makes her very tired and prone to falling asleep at any time, yet she was never properly diagnosed and denied she had a problem so she could protect Syzygy.

She knew she was going to die eventually, so she left Syzygy with the key to her discoveries, telling Syzygy to give the key to the "next person". It is thought that there may have been someone even before Alysm doing similar things, but the only one who knows, of course, is gone now.