Within the entirety of Alfheim only two AI remain after the Transition.
Yui
Yui-MHCP 001
Was the former <<Mental Heath - Counselling Program>> of SAO. She was denied the ability to perform her program function by Kayaba Akihiko. This lead to errors in her programing that were later resolved after observing Kirito and Asuna's mental state during their time in SAO. She was adopted by the couple after encountering them on the 23rd floor of Aincrad. The only reason why she survived the Transition was because disguised herself as a Navigation Pixie within Alfheim's system.- Benevolent A.I.: Yui's general frame of mindset. She is the non-physical and later on, organic version of the Robot Buddy.
- The All-Seeing A.I.: Yui has the capability of achieving this when connected to the system.
- Androids Are People, Too: Kirito and Asuna treat Yui as though she were their real daughter.
- What Measure Is a Non-Human?: Rufus, Leader of the Leprechaun Faction, expressed his doubt of Yui's worth when it came to Asuna's release.
Titania
Queen Titania, Titania of the Realm of Alfheim
Was created a set of program processings by Sugou Nobuyuki in order to brainwash Asuna into loving him as much ad Queen Titania loved King Oberon in Alfheim's in game lore. Although Sugou succeeds in the endevere of creating an ineligible Titania, neither she nor Asuna love either of them.- Body Snatcher: Because Asuna's account was linked to the AI GM Program during the Transition, Titania takes over.
- Possession Burnout: Asuna begins to fight back against Titania's possession. This causes a strain for the both of them that leads to burnout. It gets to the point that Titania deems the situation unsustainable in the long run.
- Body Surf: Titania creates a new artificial body for herself which she later possesses, releasing Asuna from her hold.
- The Computer Is Your Friend: Titania has her moments where her programing's tendency for cold hard logic pushes the boundary of what is considered humane for effencincies' sake.
- Benevolent A.I.: Titania does not care for her survival. She lacks self preservation when it comes to fulfilling her task. So long as she fulfills her programing of safe guarding the players of Alfheim until she is no longer needed, she does not care. Self preservation only kicks in when the goal has not been realized.
- The All-Seeing A.I.: This is Titania's default state when not on a war path or focusing on the individual players' lives.
- Nature Spirit: The Halkegenians believe this to be Titania's true nature. This excuse is leveraged by the Leaders of Alfheim in order to explain away Titania's inability to human very well.
