The actor is writing an arc called 'Peter and the Machine' on DC Comics' new digital series Beyond the Fringe, which debuted yesterday.
The series will consist of 14 chapters released fortnightly.
It will be broken into 'A' and 'B' sections, with the 'A' sections occurring in the show's continuity and the 'B' parts serving as 'what if?' stories.
Jackson's 'Peter and the Machine' is an 'A' story. It features art by Jorge Jimenez and will be published at four-week intervals.
Jackson is playing a reduced role in season four of Fringe, which begins tomorrow on Fox.
> 'Fringe's John Noble: 'Joshua Jackson return will surprise fans'
Watch a video teaser for the fourth season of Fringe below: