Vampires
How to become one- must consume vampire blood then be bit.
Powers- superhuman strength speed agility, senses speed and can hypnotize their victims 
Weaknesses- Sunligh(just burns doesn't disintigrate) silver and objects pertaining to their faith (burns them) 
Werewolves
How to become one- get bit or be born/cursed 
Powers- wolf form- superhuman strength and speed human form- better senses and strength
Weakness's- silver(burns and stops them from healing) and normal weapons 
Dragons
How to become on- be born one 
Powers- can take a human form , breath fire scales claws can cut through armor 
Weaknesses - magic, weapons quenched in dragons blood