I have seen so many fans asking who is Ash's father in many sites. Like what I said in this answer from Pokémon Answers, We don't know! Some fans said that Giovanni or Professor Oak or Silver from Pokémon Chronicles is Ash's father. Some fans also said that his father is a pokémon like Ho-Oh, lol!
The Best Wishes series confirmed that Giovanni was never Ash's father! He was only Ash's father in Pokémon Live! musical but the musical is NOT canon to the main anime! Professor Oak cannot be Ash's father either! Of course they both live in Pallet Town but they're not related! He already have Gary as his grandson! Silver only appeared in The Search for the Legend episode and in the same episode confirmed that he still have silver/grey hair as a kid! If he never had black hair like his son then I will chose Silver to be Ash's father over Professor Oak and Giovanni!
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