Most interesting main character? Most interesting side character?

[Warmmedown]

Is Ash/Satoshi always the main?
(Satoshi seems like such an old man name, for some reason)

If yeh, who's the most interesting major character? Like Misty, Brock, James, Jessie, Serena, May

And sides, like Oak, Elm, potato wedges etc

 

[Yoshi]

Main? Brock.

Side? Gary.