Matrona

Matrona is a prominent supporting character in the anime The Seven Deadly Sins (Nanatsu no Taizai), primarily appearing in flashbacks and later arcs.

She is a member of the Giant Clan, serving as a former warrior chief and the strict mentor who trained Diane (and previously Dolores) to become powerful fighters. Matrona is depicted as a towering, muscular giantess with long blonde hair (often in a ponytail) and striking eyes, embodying the proud, battle-hardened traits common among giants.

In the anime's portrayal, she is a formidable mercenary warrior who fights for pay and pushes her students relentlessly, believing strength is essential for survival in their clan. Her magic revolves around earth manipulation, similar to Diane's abilities (like creating heavy metal or controlling the ground), and she is incredibly strong in combat.

A key event in her backstory involves a betrayal by Holy Knights who hired her and Diane for a mission but set a trap to eliminate them; Matrona takes a poisoned arrow to protect Diane and is presumed dead for many years (leading to Diane being framed and joining the Sins). She survives in the story, loses her right leg to stop the poison's spread (replaced by a peg leg), and later settles into a gentler life with a family.

Overall, anime Matrona starts as a tough, uncompromising trainer but shows deeper layers of protectiveness and growth in her later appearances.