Wild  

, ワイルド

Wild is a creature resembling a boar that dwells in Purgatory. He devotes his existence to seeking his younger sibling, Mild (also known as Hawk), and battling the Demon King. Although he was born in Purgatory, initially, he cared for his brother, singing lullabies that Mild cherished. Tragically, shortly after birth, Mild was kidnapped by the Demon King and sent to another realm. For countless eons, Wild pursued his sibling, engaging the Demon King in numerous battles but always succumbing. Eventually, he encountered Meliodas and Ban in Purgatory and chose to collaborate with them to vanquish the Demon King, thereby liberating himself from Purgatory.