A Vampster is part Vampire and part Hamster.
They're not real. They were seen on "The Troop" on Nick.
"The Troop" is a team of three teenagers who fight monsters. The Vamster is a monster.
The names of the three teenagers are: Jake, Hailey and Felix (on the show).
For more information you should go to troopgrid.com. Then click monsters. Then click the picture of three guys with buck teeth. This way you can get more information about them.
Hope This Helps!