Cerberus is born in Ashen from Viper and Chimera alongside a still born sister. Birthed by his Aunt Siren and saved from complications by Aliana. After some time of Viper not calling him by name, Siren gives him the name of Cerberus. Chimera creates his own kingdom of Fenmyre for his growing family and moves to The Forgotten Isle.

Siren gives birth to Albion and Scylla, Cerberus discovering a little of how much he likes being a big brother. The Long Night sufferers over Boreas and Auster, bringing illness to Viper and Chimera’s three current children. Cerberus recovers before the others, getting to meet his new half-sister Rusalka by Dalila and learning of Aliana’s pup’s demise. He checks on Viper and his other sick siblings daily, until Viper escapes from her cell and attacks him. In Defense, Cerberus inures her airways but due to the ooze Viper suffocates and dies.

After Viper’s death, Cerberus moves into Siren and Dalila’s room with the rest of his half siblings but falls into some bout of depression not wanting to leave bed. Chimera takes him to meet his new siblings after Aliana births six new children following her previous miscarriage.