Oh lord, this brought back memories from the old AD&D Forgotten Realms Spelljammer set. I kinda want to see the fire-breathing phase doppelganger giant space hamster version in this series.
@Dantrig One of the weirder things made in the days of the original AD&D series. It was about the size of a bear, could breath fire, phase between ethereal and material plane of existence, and change appearance to look like something else of similar size. And for laughs, the giant space hamsters had cheek pouches, just like a normal hamster, and they were large enough to stuff a gnome into. You can look the giant space hamsters up, there are more variants than just that one (like the tyrannosaurus).
Ah, so that's the meaning of Moffu moffu.
All this time I thought moffu moffu means blasted to oblivion by a bunch of bonta-kuns armed with various arms and explosives.
@Raudhbjorn Moffu is the romanization of their word character for "Fluff". So either they enjoy his fluffiness normally, he enjoyed fluffing their tits as a hamster, or both happened and he evolved into a Panty Hamster.