Another theory that seems to be gaining some ground is that Unlocke is, basically, a genie. He offers to grant wishes, he pops out as a cloud of smoke, he's trapped by a master until he finds a "loophole," etc.
More on the genie theory, from another message board:
- I believe the Mib is Shaytan, an Islamic version of Satan. The Talmud says Satan will, "Break the barrel but not spill any wine." Ash-Shayṭān (the adversary) is traditionally an angel in Judeo-Christian belief & a Jinn in Islamic belief. Iblis may be his true name. Jinn are also connected to Rakshasa,... creatures who love games, & are shape-changers, illusionists, and magicians. In some variations of myth, Shaytan's mother was Lilith, who went insane after Adam's rejection of her power and sexuality. Important: we saw in the episode that Ricardo's home was Tenerife, in the Canary Islands. Consider: in the Mythology Guanche (practiced at Tenerife, Canary Islands, Spain), there are beings that qualify as genies, such as the... See More Gods paredros or Maxios (nature spirits), the Tibicenas (evil genies) and also the demon Guayota (aboriginal god of evil) that, like the Arabic Iblis, is sometimes identified with a genie. The Mib is a Jinn / Rakshasa called Satan. ta-dah!