I got it, the baby is a result of a threesome between Abaddon, Ashley, and Kami.

See, it's right here in the Kamible in the book of Kamizikel, 14:12

"And behold, Kami took Ashley as his beloved bride, but the serpent Abaddon, disguised as Ashley's symbiote, took part in the joyous lovemaking as well."