Why he ourple XD

They are both catchable

(Not when you're Leon using a literal Pokeball)

He's built different

They were both antagonists at some point.

They're in the Galar Pokedex

It feels weird that a ball shooting smoke and a 2000 lbs dragon are the same type

They can both learn Toxic

@BottedAccount Yeah, i realized they were poison-types right after I made this post lol

They both look like they're smiling ^U^