|Roswaal J Mathers|
|Romaji||Rozuwāru Jei Meizāsu|
|Eye Color|| Yellow (left)|
|• Personal Status•|
|Relative(s)|| Roswaal A Mathers (ancestor)|
Roswaal K Mathers (son)
Roswaal L Mathers (grandson)
|Light Novel||Ex Volume 2|
Roswaal Julia Mathers (ロズワール・J・メイザース) is the ancestor of Roswaal L Mathers, the mother of Roswaal K Mathers and the head of the Roswaal House two generations earlier.
Roswaal has long indigo hair with different colored eyes, the right one being blue and the left one being yellow. While her overall appearance is similar to her descendant, she instead wears a purple top, white tights, black boots, and a black and red cape.
Melee Fighter: Unlike the other Roswaal, the Roswaal two generations before the current one was modified by the original Roswaal to have no magic capabilities whatsoever in order to combat Sphinx's abilities. After the Demi Human War, the original Roswaal immediately switched the head of house to a new Roswaal and enabled the use of magic again.
- Starting with his original body, Roswaal has been changing his middle initial every time he possesses a new descendant. His original initial was A, making his current body his 9th one.