Exu Caveira is one of the best known Exu figures in Umbanda and Quimbanda, Afro-Brazilian religions where Exu act as messengers and guardians of crossroads and cemeteries. Caveira, meaning skull, is linked to the kalunga cemetery realm and to protection against negative forces, and his pontos cantados are sung in terreiros across Brazil. Online, the name alone became shorthand for something dark and powerful, so short clips invoking Exu Caveira circulate on soundboards and in WhatsApp groups as a meme reaction rather than as a full ritual recording.