Trikking The Blind was a Jedi that lived some time prior to 11 ABY and developed the technique of Force Sense as it was taught by the New Jedi Order under the leadership of Luke Skywalker.
At some point, a depiction of Trikking came into Skywalker's possession, which he annotated sometime after the Emperor's death in 11 ABY along with a copy of The Jedi Path and Book of Sith. The image depicted Trikking during the Seventh Assault of the Bone Legion at the Scouring of Qorl.