Fan:My Digimon

Mudamon is a Digimon who's name is derived from the word useless (muda) and gets ​weaker as it Digivolves​

UltimateMudamon
UltimateMudamon is the first Digimon in the Mudamon line, despite being a fresh level Digimon, it has the power of a Mega. If it Digivolves​, it gets weaker, so most Partners​ try to keep Mudamon at this stage.

PerfectMudamon
PerfectMudamon is the second Digimon in the Mudamon line, despite it being an In-Training level Digimon, it has the power of an Ultimate. If it Digivolves, it gets weaker, if it DeDigivolves it gets stronger, so most Partners try not to let it Digivolve, but try to make it DeDigivolve￼.

AdultMudamon
AdultMudamon is the third Digimon in the Mudamon line, despite it being a Rookie, it has the power of a Champion. It is the clumsy and often trips on it's own feet.

ChildMudamon
ChildMudamon is the fourth stage in the Mudamon line, despite it being a Champion, it has the power of a Rookie. This is the stage most of it's​ Partners receive it in.

BabyMudamon
BabyMudamon is the fifth stage in the Mudamon line, despite it being an Ultimate, it has the power of an In-Training.

TrueMudamon
TrueMudamon is the final stage of the Mudamon line, despite it being a Mega, it has the power of a Fresh. It is known as the Weakest Digimon.