Ken Masters is a playable character in the Super Smash Bros. series. It is from the Street Fighter series.
Ken is the deuteragonist of the Street Fighter series, first appearing in the original Street Fighter. Similar to his longtime best friend and rival Ryu, Ken's goal is to test his power against many different fighters and strives to become stronger, but holds more restraint due to not wanting to jeopardize his family life.
While Ryu is the more serious and stoic of the two, Ken is the complete opposite - stylish, unorthodox and unpredictable, as well as being much more violent and aggressive than Ryu. He is an alpha male with a giant ego and constantly reminds his opponents about his greatness. While he can be brash, egotistical, and arrogant at times, his heart is pure. He is generally kind, friendly, a good person, and very easygoing which led him into starting a family of his own. He never backs down from a fight no matter how difficult it looks.