Notes:Jumbo Bulborb/p4olimar

During reproduction, after an egg is fertilized by a sperm, any excess chromosomes are usually discarded through a process called meiosis. But occasionally, this process fails to occur, and a Bulborb individual will develop irregularly due to this chromosomal abnormality.

Specimens like this one are stronger than the average Bulborb and can exhibit more aggressive behavior. However, they are not able to procreate, as they will never reach sexual maturity.