From Bulbapedia, the community-driven Pokémon encyclopedia.
Romanization
I think that it's name is Mommen. I think, not sure, that when ン is next to a マ, ミ, ム, メ, or モ it's meant to be a long m sound. That's why it's Mammoo and not Manmoo. Just throwing it out there. --ケンジのガール 06:37, 8 January 2011 (UTC)