@Paddy185
Hydruckling doesn't fit the ten character rule. It almost sounds like truck too, but it's an interesting way to name the "ugly duckling"-based pokemon.
The Rankurusu and Gochiruzeru line sound legit; we've had lines where the first syllable are the same throughout, such as Pidgey-Pidgeotto-Pidgeot and Dratini-Dragonair-Dragonite.
@frostwind
Crocodune sounds suitable, but maybe something can be thrown in there to represent the crocodilian's dark and thieving nature. Crookodune? The names I think are interesting are ones that have as much references into it as possible while retaining some smoothness in their pronounciations.
For example, Empoleon is suppose to be a combination of "EMPeror" and "NaPOLEON" (a historical figure), but looking at the spelling you can find "pole", which could stand for the South Pole where penguins are found.