Chief Engineer aboard the NX-01 in the Mirror universe, reed as badly disfigured by Delta radiation which was emitted by the ship's warp core. He subscribed to the view that every year spent working with the core took ten years of a person's life. When the Mirror T'Pol went through pon farr, Tucker helped her to get through it. During Archer's brief takeover of the ship in 2155, T'Pol used a mind meld to compel Tucker to sabotage the ship and then erased all memory of his actions from his brain. [1] When the NX-01 was destroyed Tucker managed to get the Defiant operational and combat ready. Although Phlox later sabotaged the ship, Tucker was able to overcome him and restore power. [2] 