The first drawing is a kind of messenger character who would make deliveries across war torn arias in the Middle East. I was thinking a rag tag version of the characters from Mirrors Edge when I made this. Next to that is a 17th century Cossack Cavalryman.
This is Mark Antony from Shakespeare's Julius Caesar and Hamlet from Prince Hamlet. This is how I would imagine them as RPG characters. Antony could be a warrior and Hamlet would be some sort of rouge.
And here is a charmingly curious ogre inspecting his brand new best friend.