Beatrice, as a living being.
Beatrice is a major, and tragic, character in the video game Dante's Inferno, and the resulted anime film adaptation. Based on the real life character and lover of Dante Alighieri, Beatrice Portinary, her design was inspired and influenced by Dante, on purpose to create another namesake character in Dante's Divine Comedy.
In Dante's Inferno, Beatrice was the lover of Dante, before her death in the mortal plane. She was captured by Lucifer, in Hell, and transformed into a massive and rogue beast, where there she challenged her former lover, before her ultimate defeat by Dante.
Regarding the villains wars, Beatrice appears only in flashbacks, during the events of the second Disney vs. Non-Disney Villains War.
Beatrice, transformed into a monster by Lucifer.
Disney Vs Non Disney Villains War - Part Two[]
Beatrice assumes a different role, appearing as the wife of Shan Yu. She was brutally murdered by the Fire Nation's forces, led by Fire Lord Ozai, not before seeing her husband for the last time, and leaving her final breath, at her husband's arms. The flashback is later mentioned by Shan Yu, as he explained the reasons of hatred towards to the Fire Nation.
Disney Vs Non Disney Villains War - Part Three[]
Beatrice would later return in the third war. However, she only is a disguise of the Nightmare King, who planned on keeping both Shan Yu and his newfound ally, the Horned King, from escaping Limbo. However, the ruler of Limbo fails as both Shan Yu and the Horned King manage to escape the realm and join the one who brought them back from there, Maleficent and her faction.