Merlin and Dumbledore!!

There is an allusion to Merlin in Harry Potter. It is Dumbledore! 

Merlin is basically alluded to by all books that use a wizard. he is the wizard of all wizards. He is from King Arthur and he is a very wise and powerful. wizard. He is a very popular character and well recognized by all. Rowling probably wanted Dumbleodre to be liked and knew how loved Merlin is so she based Dumbledore off of him. Dumbledore is also a very powerful wizard. He is the only one that Valdamort is afraid of. If he knows Dumbledore is going to be somewhere he tries to avoid being around him. When people first think of or see Dumbledore they automatically think of Merlin, which is good because that puts a good connotation on Dumbledore which is good.