Seth Killian was the former senior manager of community at Capcom who ran the website Capcom-Unity.com. Before working at Capcom, he was lead game designer for the external group at Sony's Santa Monica Studio. Seth is also an established and respected Street Fighter commentator, with his most prominent appearance being the EVO (Evolution Championship Series) 2010, 2011 and 2012 Super Street Fighter IV Finals.
According to Seth, most of the summers of his youth were spent earning money in Street Fighter cash games, and he claims to have made an average of about $4000 a summer.
On June 16, 2012, Seth announced on his blog that he was leaving Capcom.
On March 26, 2014, Seth announced publicly via Twitter that he left Sony Santa Monica on great terms.
- He holds a Ph.D. in philosophy, and used to teach it at the University of Illinois in Champaign-Urbana.
- He is fluent in German.
- His most famous quirk is his unique take on pronouncing Ryu's name, calling him "Roo".
- Among his pet phrases when commentating is "putting him on notice", which he uses whenever a player wins a round or punishes a particularly foolhardy move by his opponent. Another of his pet phrases is his softened version of 'mindfucked', which is "mentally guard-broken".
- When using an arcade stick to play fighting games, Seth plays "crosshand": he uses his left hand for the buttons, and his right hand is crossed over to use the control stick.
- Seth Killian was the inspiration for Street Fighter IV series boss Seth, who was originally going to be named Cain; the name pays homage to Seth while still retaining the intended meaning (i.e. as a counterpart to Abel). In turn, Seth (and to some extent, his SFIV namesake) heavily inspired a character in the fighting game Divekick: the boss character S-Kill, whose desire for balance plays on Seth's major role in balancing the Street Fighter IV games.