Keena Soga is a prominent character in the anime series Ichiban Ushiro no Daimaou. She is a carefree and bubbly girl with a penchant for getting into trouble. Keena has the unique ability to turn invisible, which she often uses to sneak around unnoticed. Despite her airheaded demeanor, she plays a crucial role in the series as a friend and ally to Akuto Sai, the protagonist. Her mysterious past and hidden powers gradually unfold, adding depth to her character and influencing the story's progression.