*Ghislaine Dedoldia is a major supporting character in the fantasy adventurer light novel, manga, and anime series, Mushoku Tensei. She is a member of the Dedoldia Tribe, but ran away from his relatives at a young age and met Gal Farion who trained her to become a warrior.

Afterwards, she met Paul Greyrat and joined his adventurer party, the Fangs of the Black Wolf. Now a notable earner of the Sword King title, she is tasked by Paul to take care of his son, Rudeus Greyrat along with his cousin, Eris Greyrat while also working as Rudeus’ student, as a result of her desire to start studying as someone who often falls for scams.

After the impacting Teleportation Incident that occured in Fittoa Region out of nowhere, she is determined to avenge Eris' grandfather, Sauros Boreas Greyrat, who was falsely accused and later executed of being involved in the Teleportation Incident. She was extremely loyal to Sauros, as a result of having been rescued by him after she was in the verge of death.

Ghislaine preferes to remain stern majority of the times, resulting in an emotioneless expression, which gives others uncomfortable vibes. However, deep inside Ghislaine actually possess this very emotion impacted nature and can be easily angered. In such case can be seen when Rudeus read Paul’s message, it referred her as a Musclebrain, infuriating her.

To Eris, she acts like an elder sister figure and harbors high pride to serve Eris’ grandfather, Sauros and is determined to avenge him after learning his execution from Rudeus. Despite possessing outmatched swordsmanship and physical prowess, Ghislaine has her weak points that are often being exploited by others who trick her into falling into their scams, which involves almost anything in math, money, or requires her to read, traits that she is incapable.

This lead her to request Rudeus to be her teacher to satisfy her desire for knowledge.*