MasterOfKnees
Space Pirate
The only Pokémon's size who isn't its real size is Charizard, but there's a lot of inconsistency with his size in general. Ivysaur might also be a little on the small side.I've never measured all of the Pokemon or anything, but intra-series, every character seems to be proportionally sized to others from their series.
Btw, that Ridley is amazing, can't be said enough I guess.