I think Ash and Dawn do share something in common:
- They each have a Quilava
- They have a Pokemon that stays outside of its Poke Ball (Pikachu and Piplup)
- Both saw a legendary Pokemon at the start of their journeys.
Not to mention Ash traveled with two separate girls with the Togepi family. That's common for Dawn/Misty though..Mm. I'd say they both wear a hat? They travel with Brock? XD For some reason I'm fresh out of my mind..