A few of my friends and I were exploring Halvung awhile back, two days after this expansion came out, and we saw this guy. A few days later we decided to go to Halvung and hunt this guy. From what we've learned, he is a regular mob. He does not seem to drop any large amounts of gil upon being killed. None of us were THF main or sub, so it is unknown to me whether or not stealing/mugging yield greater rewards than normal mobs. He does you Frypan once or twice per fight (AoE attack, looks pretty cool). Also, he is not the only rich moblin, deep in Halvung, close to Mount Z, there is a Moblin Billionaire, by the metal stricture across the room from the very last gate between Halvung and Mount Z.
Naa, he don't detect you by scent at all. If you look closely at the pic, thats me invis right behind him (Behind the word millionaire). Just invis works with him, just like all other gobs in the game.
hmmm, I'm invis and i just noticed that i got a shadow still. >.>
A few friends and I were exploring in there and killed a few of these. I am a thf, mug for about 50gil, and stole nothing. I believe he is just a normal mob like you said.
On a full moon, if your facing South, and eat a 2, 3, and 4 leaf bud, while having a lucky egg equipped, and wearing a trump crown and wielding a Thieve's Knife, if you trade him a Millionaires Desk, then kill him, with a Dancing Edge final hit, you have a 1% chance of him dropping gil, randomly from 1 gil to 100 million gil.