The first Kimba series was made up in 1965.
There are several seasons of Kimba and the latest Movie (Jungle Emperor Leo) was made after the Lion King came out and if you look at it the beginning is very much like the Lion King. They just stole everything back But I did not like this specific movie much since it left much out what was in the series and you can easily get confused.
I saw Kimba long before Lion King and liked it much when I was a kid. I think Kimba is one of the reasons that I love Lions so much.
I also would like to see Bagi (which is also from Osamu Tezuka) in a dubbed version. The movie has a really great Story.