Iam the guy who paints Presidents riding dinosaurs, fighting gorillas, tigers, etc. I'm also known as Sharpwriter AMA!
My real name is Jason Heuser and I really enjoy history and drawing over the top crazy stuff. I've been working on compiling an alternate history book " THE UNABRIDGED SECRET HISTORY OF THE UNITED STATES OF AMERICA" that includes time traveling presidents, aliens, the undead, werewolfs etc. I've gotten a few PMs asking for an AMA so go for it! Ask me anything!
My Deviantart gallery which has some of my early work(Which is terrible): http://sharpwriter.deviantart.com/gallery/
My Etsy store: https://www.etsy.com/shop/sharpwriter
I've never done this before so Mods if you need anything else for me to confirm my identity let me know.
Ask away, I'll do my best to answer everything question and maybe we can talk about RAMPART.
EDIT: Mods removed the thread(not really sure why) but were back up now. I added more proof hopefully to appease the Mods.