[quote=@Ariamis]
Can Incubators actually be hungry? They don't seem to have a normal digestive system if PMMM is anything to go by, instead having a black void where the grief seeds get thrown into.
[/quote]
Headcanon says that Incubators convert the food directly into energy. Anyway, there is another reason.

[hider=Secret]
It's a different Kyubey, so slightly different tendencies. 'Kyubey' is just an abbreviated job title.
[/hider]