Celebi possesses the ability to travel across time, and this power was sought by Pryce, who wished to travel back in time to save his diseased Laprases. Disguised as Mask of Ice, Pryce target Lugia and Ho-oh for their feathers, which allowed him to create the special GS Ball. With the GS Ball, Pryce was able to capture Celebi at the end, and began to turn back time. Fortunately, Gold freed Celebi from the GS Ball, and it allowed Pryce to be reunited with his Laprases in the voids of time. Later, Celebi voluntarily joined Ruby's team and remained dormant until after the Kyogre and Groudon incident, where it used the Blue and Red Orbs to tamper with time and resurrect the few who perished during the battle.