These are known as Hyper-Realism drawings with coloured pencils. I can’t comment on how long this must’ve taken, but surely it took a couple days per piece? Regardless of how long they took, the detail is simply breathtaking.
1. This guy either wants to eat you, or kill you. You decide.
2. She certainly doesn’t want to kill you, but perhaps poison you in your sleep after a nice massage.
3. This cat looks incredible, don’t you think?
4. Probably my favourite drawing of them all, just look at the detail!