Little is known about Lyseria's origins or her life, other than the fact that she appears to be descended from Mimir, a deity of wisdom and the ancestor of the Vanir. She lived hundreds of years prior to the game's events, at the time when Midgard was created, and was a very skilled sorceress with prophetic powers, most likely because of her ancestry. However, she feared these powers and thus decided to take her own life and seal herself inside a giant crystal within the Arkdain Ruins, believing that there was no place for her in Midgard or any other world. Grey eventually managed to locate the crystal during his attempt to reverse the ritual of Soul Transfer that was keeping him alive, possibly aware of Lyseria's magical talents. It is unclear whether he used the crystal, or, if so, how he did, but his endeavour was unsuccessful.
Seeking a way to gain more of an edge in Ragnarok, Odin ordered Lenneth to find Lyseria. Travelling to the Arkdain Ruins, the Valkyrie called her soul out from within the crystal. Seeing this as the perfect opportunity to be rid of her anguish, Lyseria attacked. Lenneth defeated her and recruited her.
Lyseria is a very powerful Sorceress, only bested by Gandar and Lezard. She comes with both holy-elemental attack spells and some defensive and restorative spells, but you will need to round out her selection if you want her to perform at full capacity. She will join your party with a Ruby Mace, Tiara, Cloak and Leather Boots. Her Familiar is a dove.
As Lyseria is a Sorceress, her PWS will vary depending on her assigned attack spell and her weapon. She will either cast the same spell three times in a row or use Great Magic, if her staff has that property. She will say "In the name of the gods, I seal thee!" before using it.
Lyseria can be obtained in the Arkdain Ruins in Chapter 7, in Hard mode only.
Lyseria's starting hero value is -67, and, as a Sorceress, she can meet the requirements for Chapter 7. However, a bug in the game prevents you from getting her back in the Seraphic Gate if you transfer her: once gone, she is gone for good. Nevertheless, despite the fact that Odin specifically requests her power, you will suffer no penalty for keeping her.
Lyseria may be derived from the Greek word λύσις (lusis, expiation, deliverance ). This could be a reference to her desire for penance and her wish to be rid of her powers.
- Lyseria is voiced by the same actress as Mystina and Jelanda.
- Lyseria is one of two Einherjar whose recruitment will not drop Lenneth's Seal Level. The other one is Lorenta. In Lyseria's case, this is probably due to the fact that Odin specifically asks for her and that she is a positive character, as opposed to Gandar, the only other Einherjar that Odin specifically requests.
- Lyseria and Gandar are also the only two Einherjar who do not have Spiritual Concentration sequences. In Lyseria's case, it is because she is already dead.
- Lyseria is one of three Einherjar who are recruited from dungeons rather than cities. The other two are Grey and Gandar.
- Lyseria was originally supposed to be linked to Jayle in some way, but this idea was scrapped during development.
- The fact that Lyseria sealed herself within a crystal likely prevented her soul from naturally rejoining the cycle of rebirth, as Odin implies when he first mentions her. This would be consistent with her belief that the world deserved to be permanently rid of her powers.
- In Norse mythology, Mimir , whom Lyseria is supposedly descended from, was male and an Aesir. He is also depicted as male in the Valkyrie Profile manga .