Axl (voiced by Maurice LaMarche), Newt and Mandy Kroker (both voiced by Lauren Tom) are the children of Kif Kroker and Amy Wong. Although Amy raises them as her own, their biological mother is Leela. Kif gives birth to them in "Kif Gets Knocked Up a Notch", and twenty years later, in "Children of a Lesser Bog", they are the only remaining spawn that survive the perils of nature, getting eaten by creatures or Zoidberg. Their names are plays on types of amphibians: axolotl, salamander, and newt, respectively.