I don´t know how no one has done this yet!! 
Something tells me that eventually a Mogma would result from that... 
I think that this guy is the evolution of the mogmas, I mean, what happened to them after Skyward Sword?
Since
Minish Cap comes after
Skyward Sword in the official timeline, I'd say the Mole Mitts are related to the Mogma or Digging Mitts. Beyond that, I dunno.
(Although, since the Subrosians live underground, it might be possible that underneath those cloaks...

)