There are numerous videos and pages that theorize who is Ash's Father.
I think that Ash's father is Riley because Aaron and Riley are interconnected as they have the power to control aura. Now when we come down back to Riley again then we can say that he is the father. These are some reasons:
- Ash and Riley have a Lucario.
- They have died by Lola Wallace
- Hi
- Ash has a very strong aura which was shown in pokemon journeys.
On massive point can be that the riolu Ash has hatched from an egg, and that egg was Riley's. Now the question which comes to our mind is "HOW?" Well then the answer to that question is Pokemon Diamond & Pearl.
Let me explain to you in detail. So, in the pokemon game of the sinnoh region specifficaly Diamond, Pearl and Platinum, when you help Riley beat team galactic he gives you a pokemon egg as a reward. It could've been that Ash's pokemon egg of riolu was a thanks by Riley. To add more proof to this you must've heard Nurse Joy say "This egg was found in the Sinnoh Region," and Riley is from the Sinnoh region which makes it clear that the pokemon egg was of Riley. So I guess that after Ash and his friends went from Iron Island so that they could take on the gym, Riley and Cynthia's grandmother were researching and maybe Riley learnt a lot of science there. Then, after he studied more he understood on analizing DNA so later after doing many sample tests he tried to check his DNA. Later maybe he used some of Ash's body part(like hair, body dust, etc.) where in he found out that his DNA was very similar to Ash's. Maybe then he understood that he and Ash were related and later he realized that he was Ash's father.
Well this is all a theory so nothing is accurate. I thought over this theory for a long time and I think that this is the most effective theory amongst the theories I have read.
Hope you liked this too!!!!!