Board Thread:Naruto Discussions/@comment-1512913-20140725203756/@comment-23887466-20140727044134

Well, there are two ways to go about this.

1. Jinchuuriki: We all know that Tailed Beasts' Chakra had its own will at least, proven by the hatred in Kurama's Chakra. Naruto is the first person in the series to have TB's Chakras only not a full TB and somehow these Chakras manifested its on form and consciousness inside of him. In Minato's case it was clear that he is a Jinchuuriki since he had a half of Kurama just like Naruto, but it was just a Chakra with no consciousness and it was bigger than the other TB inside of Naruto, so either the same thing that happened to Yin-Kurama happened to the other Chakras or Hagoromo was the one who manifested a consciousness for each one of them.

Since we know that after the death of a tailed beast, its chakra will reform and manifest itself again it could be a similar concept to what happened to the TB in Naruto.

2. Chakra Entity like Minato's and Kushina's. Minato and Kushina were able to use techniques inside of Naruto and the TB were able to do the same but in their case it was to help Naruto instead. The problem is that Chakra entities like Minato or Kushina faded with time but the same didn't happen to the TB, so if they were really Chakra entities then I would say that Hagoromo is responsible for stabilizing their Chakra.