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Bill Harken
Portrayed By Malik Yoba
First Seen "Pilot"
Status Living
Gender Male
Family Jeannie Harken, Wife


Alpha Type Alphatype-hyperadrenal.jpg Hyperadrenal
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Bill has the ability to enhance his strength and speed triggered by a "fight or flight" response. It is implied that he can activate this state at will. Bill cannot stay in this state for very long or else he will become cripplingly fatigued. Bill suffers from anger management. He has what Rosen describes as "boundary issues;" he routinely samples other people's food without asking permission.


Bill meets with another agent outside the Jacob K. Javits Federal Building in New York, New York. The other agent gives Bill some files pertaining to veterans with post-traumatic stress syndrome who have criminal records.


  • Bill used to work with the FBI, before an incident where he broke his superior's arm. Despite an offer to return to the bureau during Bill and Gary's Excellent Adventure, Bill prefered to stay with the team
  • Bill can also enhance the strength in his legs, enabling him to run considerably faster.
  • In addition to enhanced strength and speed, he also seems to become invulnerable, and only seems to respond to pain after he stops using his ability.