James on Will Trent is James Ulster, a convicted kidnapper and serial killer who becomes one of the show’s most important long‑term antagonists and psychological foils for Will.

Who James Ulster Is

  • James Ulster is introduced as a notorious criminal with a background as a defense attorney who was later disbarred.
  • In the book/show canon, he is linked to multiple abductions and murders, making him one of the most dangerous figures in Will’s world.

His Connection To Will Trent

  • James Ulster is directly connected to Will’s traumatic past; Will’s biological mother, Lucy Morales, is identified as one of Ulster’s victims.
  • This creates a deeply personal and psychological cat‑and‑mouse dynamic, turning Ulster into more than just another case for Will.

How The Show Uses Him

  • In the TV series, James Ulster is played by Greg Germann , who appears in a recurring capacity rather than as a one‑episode villain.
  • His return in later seasons is treated as a big plot event, with showrunners framing him as central to exploring Will’s identity, trauma, and family mystery.

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