Derek McGrath

Actor (Crewman Chell) — Voyager

Canadian actor who played Chell, the talkative Bolian former Maquis crewman aboard Voyager, in the first-season episode Learning Curve and again six years later in Repression.

Derek McGrath is a Canadian character actor who played Crewman Chell, a Bolian member of the Maquis absorbed into Voyager's crew.
He first appeared in Learning Curve, the first-season finale, as one of the four undisciplined Maquis whom Tuvok puts through a crash course in Starfleet training. He came back in the seventh-season episode Repression, in which Chell is among the former Maquis affected by Tuvok's mind control.
Chell is also mentioned in the last season as a would-be replacement for Neelix in the galley. Outside Star Trek, McGrath is familiar from many television comedies and dramas, including a recurring part in Cheers.