|Mr. and Mrs. Kroker|
|Relatives|| Son:Kif Kroker |
Unknown number of Grandchildren
|First appearance||The Beast with a Billion Backs|
|Voiced by||Billy West and Tress MacNeille|
Mr. and mrs. Kroker are both the parents of Kif Kroker. Amphibiosans go though stages of their life, and mr. and mrs. Kroker are both colonies of flying hookworms, because they are in the last stage of the Amphibiosan circle of life.