The Orc Brontops riders are massive models, heavy as well, a real lump of lead.
First here is Umran Kal, a character Orc on a named Brontops mount with a name which escapes me at the moment. Grumbler or something similar. As a character, I thought Umran Kal would lavish some expensive gold painted armour to his Brontops.
This is perhaps my favourite of the Brontops models, an Animistic Shaman. A great pose. I wanted to do the skin of all the Brontops in a sort of rhino grey with a good leathery feel.
Here is one of the many Orc warriors on his Brontops, with a more basic armour colour.