Samuel Aboah was a teliko who traveled to the United States from Burkina Faso. He lacked a pituitary gland and hunted down African-American men in Philadelphia to replenish his hormones after disabling them with a blowdart. In this manner, he murdered five men and nearly killed his INS agent, Marcus Duff, and FBI Special Agent Fox Mulder. Aboah was subdued after being shot by Agent Dana Scully and was to be tried for five counts of murder, but there was doubt he would even survive long enough – without hormonal replenishment – to be tried. (TXF: "Teliko")
- Samuel Aboah was played by Willie Amakye.