Is that a monster in my pocket or am I just happy to...
Never mind, here's a set from 1991, manufactured by Morrison Entertainment Group/The Source Group.
Monster In My Pocket is a franchise that began with games and toys and evolved into comic books and trading cards. They were originally released by Matchbox.
Here are our stickers. They appear to be next to one another on the way you would lay out the stickers.
I mean, that's a ghost, for sure.
I guess without context these are just a bunch of pictures of paintings of monsters.