William Riker
From Tardis Wiki, the free Doctor Who reference
Commander Riker was the first officer of the USS Enterprise. He was present in the ship's holodeck with Data and Beverly Crusher when the Doctor's TARDIS landed in a "Dixon Hill" holonovel. (IDW: Assimilation²)
Behind the scenes
As of issue #2, Commander Riker's first name has not been revealed in Assimilation², so from the point of view of the Doctor Who universe he's just "Commander Riker" so far.