It is hinted that Tabatha was an early attempt to house Martel's consciousness as an alternative to breeding a perfect Chosen. The experiment had initially failed, though. At some point, she became Altessa's maid, who escaped from Cruxis. The first time she is seen is when the party visits Altessa to ask him to make an Exsphere for the absent Presea Combatir. When he refuses and tells Tabatha to throw them out, she shows them the way out and explains why he is hostile. After Ozette is destroyed because of Altessa, Tabatha asks Presea to forgive Altessa for what he did in the past before going to help her master. Later on, she takes the responsibility to look after Mithos while the party continues the journey.