Cellval is an original character introduced in the Kemono Friends universe, specifically appearing in the stage play adaptation. She is a humanoid manifestation of the Ceruleans, the primary antagonistic creatures in the series. Cellval is highly intelligent and analytical, orchestrating various plans to challenge the Friends and test their bonds. Her presence adds depth to the story by providing a complex, sentient foe who questions the nature of friendship and identity, making her a memorable antagonist in the Kemono Friends franchise.