okay my idea for ash and gary's dad is that prof. oak had 3 sons giovannai silver from pokemon chronichals, that one dude looking for moltres, andanother person. silvers son was ash giovannais son is silver and the other persons is gary. garys mom died in child birth wit gary so thats why is personallity is all messed up at the beging. so giovannai takes over team rocket once oak kills his wife figguring out shes a rocket member and giovvani starts killin his brothers first gary's dad and then he tries to kill silver but he relizes he can't sohe just dumps him off in the sevii islands. thats why he knows of ash and has a simmilar personalitty
I am conviced that Professor Oak is Ash's dad.They seem pretty close in my opinion.
Has anyone ever noticed the similarity between the names -
"Delia and Samuel" and "Delilah and Samson",The couple from the bible (I can't remember the specifics of the story ,so maybe I have it wrong)?Just a theory but it seems like a reference to some sort of romantic relationship.
Ash kind of looks like Oak as well.Admitidly,maybe I'm just digging for clues because I think they make a good couple.