Ultra-Rare Moshlings are the most difficult to obtain as players need three coloured seeds. Moshlings that have the numbers going from 78 and onwards are Ultra-Rare Moshlings, except for some (e.g. Bentley).

Some Ultra-Rare Moshlings are obtained from Super Moshi Missions but some get attracted to Special Seeds (like the Trashy Tulip and the Hip Hob Hibiscus). Even though Betty, Boomer and Pip have special seeds, they are not Ultra-Rare.