The animated series Legend Quest: Masters of Myth (Las Leyendas: Creaturas Ocultas) is on Netflix now (so go watch it, please). I directed 3 episodes. Did some storyboarding, character design and art too for the series.
Early in the preproduction stage we were developing the intro sequence here in Mexico. I was the art director for it since my man, Miguel Vélez was still in Ecuador. He and Mauricio Moralli were the series art directors. 
Here's some unused material I did for the (amazing) intro that was trashed due to some executives decision to redesign everything.
Also I added some cards and thumbs that came after that.
Will upload more material soon. Cheers!

The original intro sequence had a dragon and these are some approaches I did for the design.

This is the final desing and turn table for the 3D model.

The original intro also had some monsters in it that would come out from behind the pyramids.

These didn't make it.

I was pre-directing art and supervising layouts for the original intro of the series. These were for some of the scenes.

Then came the art redesign. That awesome (and almost finished) intro was trashed and every director had to come up with an intro approach. I didn't finish mine 'cause I helped out my bud's (Hugo Blendl) version with some art.

These are some of Hugo's art card for his intro sequence approach. I added some colors, text and texture to them.