Usagi Senki: Sekijuji no Chumon

Usagi Senki: Sekijuji no Chumon (ウサギ戦記: 赤十字の注文, translated in English as Rabbit Chronicles: Order of The Red Cross) is a 2020 Nickelodeon flash-animated anime series based on the tokusatsu genre, The Loud House, and the GARO metaseries.

Plot:
In the city of Royal Woods, there lurk demonic creatures called Shadows, beasts who devour rabbit flesh and sustain themselves on negative emotions like hatred, sadness and malice. However, there is still hope, as the secret Order of the Red Cross (Sekijuji no Chumon, has trained twelve brave warriors known as the Mabaki (魔バ騎, translated in English as Magic Bunny Knights)

Shadows:
The main antagonists of the series, Shadows are demonic creatures who prey on rabbit flesh and the darkness of their victims. There are many different types of Shadows, including the average human sized versions, the colossal giant-sized versions, and the powerful ancient versions, Apostle Shadows. There are also Shadows which possess objects and animals, and Psycho-Shadows/Psychos, hybrid Shadows with strength almost on par with Apostle Shadows.