Question

Except for Ruby, Sapphire, and Emerald, because it isn't really your dad because my dad's name isn't Norman. Why don't they add a sibling or a father in the game? Is it based on the anime? 0_o

Answer 1

In Gen1, there is a rumor that there was a war.
That's why Red's dad died and doesn't exist in the game.
Also, Green/Blue's parents died also, and Professor Oak adopted him.
Lt.Surge says "My pokemon helped me in the war(or something like that), also
I'm sorry if your childhood is now ruined, but remember, it's just a rumor.

The other theory is that their dad left a journey, so the main characters wants to be like their father, also leaving for a journey