I just wanted to post this because I've seen a couple people that seem to be confused. The 4th hokages edo does not have kyubi chakra that just makes no sense.... The same way Orochi's arms were separate from the 3rd the kyubi's chakra is seperate from the 4th. Plus what use would an edo have with kyubi chakra added on to their already unlimited chakra..... i guess it is stronger chakra.