|This article is about a/an robot in Power Rangers Time Force.|
Doomtron is an evil giant robot created by Frax, and his most powerful creation. Doomtron's energy comes from a Trizirium crystal, which is kept inside Frax when he is wired to Doomtron's systems, which allows him to command Doomtron through synchronization. Originally meant to be used for Frax's own schemes, upon his capture by Ransik, the mutant would have it be used in his final attack on the city.
Shortly before sending out Max Axe, Frax tested a human-sized Doomtron's synchronization, which was successful. Eventually, Doomtron was grown to giant size as Frax completed its construction. However, Frax's hiding place was found by Gluto, and was stormed by Ransik, to Frax's shock as he thought that Ransik had been destroyed by his Venomark ailment. Frax was then reprogrammed to obey the mutant, and once Doomtron was fully operational, Ransik had Frax board it and attack the city. Doomtron proved a hard robot to defeat, as he beat the Q-Rex Zord in battle and wreaked havoc across the city, opening large vortexes in the sky, until the Time Force Rangers joined in the fight in the Time Force Megazord Jet Mode, which temporarily knocked Doomtron from the fight with Cyclone Defense. Doomtron quickly recovered and the Megazord battled it, holding it off long enough for Wes Collins to neutralize the Q-Rex's Trizirium Crystal power source. Wes then took command of the Q-Rex and had the Q-Rex fire on Doomtron. The blast destroyed Doomtron's crystal power source and caused it to explode, destroying Frax as well.