Which Level 26 character appeared in CSI season 11's episode 'Sqweegel'?

The Level 26 character who appeared in CSI season 11’s episode “Sqweegel” was Black Sqweegel.

Sqweegel originated in Level 26, a multimedia crime-fiction project created by CSI creator Anthony E. Zuiker. The character crosses from that book universe into the television series in season 11, episode 4, titled “Sqweegel.”

In the episode, the forensic-proof killer is presented as an elusive and highly unsettling figure who can evade conventional evidence collection. Daniel Browning Smith, known for his extreme contortion abilities, plays the character, helping explain the villain’s unnerving physical movement.

The other options are established CSI antagonists, but they belong to the show’s own recurring criminal storyline. Paul Millander, Jared Briscoe, and Nate Haskell are not the Level 26 crossover character featured in this episode.