Randgriz is the fourth eldest of the 13 Valkyrie sisters. Her name means "Shield-Destroyer." She became a Volund for Lu Bu during Ragnarok.
Not much can be said about her character due to her lack of dialogue, although one of Randgriz's more defining personality traits is her loyalty to her older sister. When requested to partner with Lu Bu, she stated she was willing to do so and remained with the warlord even in his last moments when faced with certain death.
(Source: MAL News, Shuumatsu no Valkyrie: Record of Ragnarok Wiki)