Seth Youngblood is the quiet assassin and stealth specialist of S.T.A.R.S
Like all other Heroes, Youngblood was built in the Assembly Tower in Makuhero City. He was not assigned to team and worked solo as an assassin.
Acceptance into S.T.A.R.S
Not much is known about him but Youngblood was accepted into S.T.A.R.S because of his stealthy skills. He members of S.T.A.R.S asked why he was accepted, Mr. Makuro stated that "No matter what, Seth always gets the job done".
Youngblood is extemely quiet and secretive. He tends to let his actions do the talking. Not much is known about is past but many believe that Youngblood was a mercanary hired by Mr. Makuro to do the dirty work that heroes would not.