Ghislaine Dedoldia is introduced as just another side character at the start of Mushoku Tensei Jobless Reincarnation. She used to be in Paul’s group and excels at swordsmanship. He even mentions that Ghislaine is way more skilled than him. She is the Sword King, which means one of the highest-ranking swordsmen in the world. Ghislaine is swift and very strong on her feet, which explains why she’s an S-ranked adventurer, too.
As the series progresses, she becomes an essential personality as she trains Rudeus and Eris. She even learns how to use fire magic from the protagonist. There are a bunch of characters in the series who boast incredible physical abilities and magical attributes. Some of them, such as those mentioned below, can easily overwhelm Ghislaine in a fight.
5. Eris Boreas Greyrat
Rudeus used to teach magic to Eris Boreas Greyrat, while Ghislaine taught her swordsmanship. Her skills were further enhanced when Ruijerd Superdia and the Sword God Gal Farion taught her to fight. She was efficient in Sword God and North God styles. Being a prodigy, Eris quickly climbed up the ranks and possessed the titles of Sword King and North Saint. Her sensory abilities are extraordinary, and she can even trace the flow of mana. She impressed the Sword God so much that he offered her a chance to become Sword God by challenging him to a battle.
4. Almanfi
This character got little screen time in Mushoku Tensei. Almanfi was introduced in the eighth episode of the series. He attacked Rudeus before the entire Teleportation Incident took place. He kept up with Ghislaine during the fight butwas interrupted due to the Teleportation Incident. Until that point in Mushoku Tensei, Almanfi was one of the most capable fighters.
3. Ruijerd Superdia
The head of the Superd Clan, Ruijerd, belongs to a race known for its outrageous rage during the Laplace Wars. He looked after Eris and Rudeus after the Teleport Incident and even trained the duo during their journey across the Continent. He endured intense training, which justifies his position as the strongest member of the Superd Clan. It is said that he can easily overwhelm Ghislaine. He even blocked an attack from the Sword God Gal Farion, who further goes on to say how powerful he is. He has a third eye on his forehead, allowing him to watch enemies who aren’t in his normal field of vision.
2. Rudeus Greyrat
The show’s protagonist, Rudeus Greyrat, is constantly training to become stronger and better at his abilities. He learned magic from a very young age and can perform voiceless incantations. Rudeus was born with a strong Laplace factor, which describes his affinity for magic at a young age.
He has an arsenal of abilities, including the Foresight Eye and Clairvoyant Eye. He is immensely strong at magic, along with these gifts from Kishirika Kishirisu. He is at Emperor level in Water magic and Saint level in Earth, Wind, Fire, Healing, and Detoxification magic. With his magical attributes alone, he can significantly overwhelm Ghislaine.
1. Kishirika Kishirisu
The Great Demon Empress is one of the strongest characters in Mushoku Tensei. She granted Rudeus Demon Eyes and helped him occasionally. During the first two Human-Demon battles, she was the leader of the Demon race. Not much is known about the extent of her powers, but she possesses enough titles to reflect her immense power level. It goes without saying that she can easily overwhelm Ghislaine without even breaking a sweat.
