Seth stands at 5'9" with an average physique and jet black unkempt hair. The bags under his eyes and uncompleted homework betray his habits of late-night video gaming paired with surfing the web at night. His blue-green eyes hold a mischevious look in them almost all the time as if he were plotting a prank against his peers or mentally undressing any remotely attractive girls he comes across. His hair is normally spiked every which way, giving it an unkempt look. Seth favors clothing that is loose but not baggy on him and wouldn't be someone you'd find in a suit.

The blood of Poseidon flows in him, giving him control over water and the ability to breathe while underwater, including a companion so as long as they keep in physical contact with him.

Seth is the only child of Mrs. Sterling and her husband, whom was apparently found missing in action in the Persian Gulf during Operation Desert Storm before Seth was born. Since then, Mrs. Sterling had raised Seth by herself with the help of her sister every now and then. Mrs. Sterling, does not have much presence in Seth's life and normally she works two jobs a day just to make ends meet in their apartment. A lot of the time, Seth is alone and left to his own devices.

Seth is independent but rebellious when presented to a figure of authority. He "barely" complies with school regulations and never does his homework. He's considered a "bad" apple even though he's not one at heart. He just likes to be left alone and is self-centered, though he is a sucker for damsels in distress and attractive girls. He has an imaginitive mind which, in combination with the raging teen hormones surging in him, often leads to vivid (or lewd) fantasies playing in his head. He enjoys making dirty jokes and telling stories, often basing the main character or main hero off of his ownself. Seth has an appetite for adventure which he satisfies with late-night online gaming which might explain why he lacks close friends or a girlfriend. He also enjoys swimming and sometimes ventures out to the beaches on occasion.