There are 3 main characters. Actually 4, because later in the story, Dartagnon joined the three musketeers. The other main characters are ( ofcourse the three musketeers plus Dartagnon ) Porthos, Aramis and Athos
Kazuya Mishima is the main character of Tekken 1 & 4, Heihachi Mishima is the main character of Tekken 2 (Although the events in Tekken 2 revolve around Kazuya's actions), and Jin Kazama is the main character of Tekken 3, 5, & 6.
The main 4 characters in this series are Otto Malpense, Wing Fanchu, Shelby Trinity (aka. The Wraith) and Laura Brand (who is obviously the best!!). In addition to these 4 there is also Nigel Darkdoom, Franz Argentblum, Maximillian Nero and Natalia (aka. Raven).
There are 4 main reasons the make the Harry Potter series fantasy: 1. Characters are mainly wizards and witches 2. Characters cast spells using wands 3. Characters use broomsticks and floo powder for transportation 4. The setting is imaginary