I've lived there since I was 3, the only brands you will find are Schleich and Papo. JouéClub Village Paris has both and it's going to be your best bet, it's the biggest toy store in Paris (in the 9th, metro Richelieu-Drouot.)http://www.villagejoueclub.paris/
I last went there a few years ago but they have the biggest selection of figurine I've found in Paris as far as I know. Unless someone has another store I haven't heard of which I"d love to hear about...
If you decide to go, may I suggest walking in the covered galleries that are next to it (passage des panoramas/de Jouffroy) it's very lovely and not on top of the tourist things to do so quieter than other places and great for bad weather. One of them also has a couple of stores that sell dollhouse furnitures and model making supplies If you're into that.
Hope it helps!