Part warthog, part chrome motorcycle, Afterbirth is a miserably cursed human forced to live as a mount. He is ridden by Hot Roddy in The Switchblades, helplessly used in his search for people to bully and prank. Afterbirth largely operates like a modern motorcycle, comparable to the dire dragonflies of The Trashlands. While incredibly fast, the creature itself pleads for death in his mutated state and is easily steered by a rider. Hot Roddy has the ability to summon Afterbirth from anywhere by whistling, though it requires time for him to arrive if he's far away.
Bellow speaks to him using Speak With Animals and Afterbirth immediately pleads him for help and blurts out his origin. He explains that he was once Arbold, a human who was cursed by offending Ramlin, the son of Weirmon the god of letter writing. He offended Ramlin for claiming that all things that could exist already were already created. His new form seems meant to prove him wrong.
After Roddy is caught by The Witch Hunters at Ruleshaven, he escapes and reclaims his trusty mount. Hot Roddy finds and drives The Shish Kebab Express instead, but he still keeps Afterbirth stowed in the back.