User blog comment:Jopjopjop/SlashDog/@comment-73.46.6.122-20150615203910/@comment-67.62.189.6-20150624042115

As far as I can tell, independent avatars are animalsor beasts that are summoned to do the owners will and protect them. I don't believe they can act against their owner's will, though Canis Lykaon seems to be special in that it can act without specific instructions.

I don't think Regulus qualifies since he is fully sentient like Ddraig. Jin is intelligent and capable of learning but doesn't seem to be self-aware like Regulus.

Utsusemi are experimental creatures that have been bonded to a person in a manner similar to IASG. There are differences though. IASGs cannot be killed permanently and at best can be only temporarily defeated so long as the possessor lives. The monsters used for Utsusemi can be killed meanwhile, though the group that made them can ressurect them from even a single body part. Defeating the Utsusemi monster also causes the host to lose consciousness.