My favorite characters from all fandoms are:

Lord of the Rings: Eowyn, Sam, Legolas, Gollum

Star Trek TOG: Dr. McCoy, Spock

Narnia: Reepicheep, Aslan, Caspian

Harry Potter: Sirius, Lupin, Draco

Percy Jackson: Bianca, Grover, Nico

Doctor Who: 10th Doctor, the Ponds