I'm not familiar with the plot at all, and I don't wanna spoil it. Right now I'm trying to focus on getting to know the pokemon. I don't know their names by heart, but I'll know them when I see them.
I have no clue who Otomaru is, but if I see a pic, or just a description, I'll know what it is. I LOVE Terakion and Sazando! But my all-time favorite is Urugamosu! I LOVE Bug pokemon (Well, most of them)