Quantasaurus-Rex
The Quantasaurus-Rex (Q-Rex for short) is operated through voice activation by the Quantum Ranger. Like some Other Ranger Zords before it, it is not piloted by the Quantum Ranger, but controlled by the press of the buttons on the Quantum Morpher. It is incapable of combining with other Zords, although it can change from its Dinosaur Mode to Megazord Mode, and the Time Force Megazord in Mode Red once rode on the back of the Q-Rex as it finished off the enemy. Originally a prototype Zord from Time Force, the Q-Rex was one of the first objects to be sent back in time, but it was lost in time during the Jurassic until recovered by Wes and Eric. It is powered a Trizirium Crystal, a technology developed in the future and manufactured from what is considered industrial waste today. Due to its unstable nature, it can often go berserk and out of control.
Its main weapons in dinosaur mode are the Q-Rex Lasers on its back and a giant laser that fires from its mouth. When the Quantasaurus-Rex transforms into Megazord form, it undergoes several changes in arsenal. Its dinosaur mode back lasers are replaced by shoulder mounted cryo-units, which are used in the Max Blizzard attack to freeze mutant enemies into stasis. It can also fire its left hand in the Q-Rex Thunder Fist attack, similar to an attack used by the Astro Delta Megazord. Its other weapon is the Q-Rex Missile gauntlet located on its right hand. The final attack, of course, is the aforementioned Max Blizzard. This Megazord also has a special emitter on its chest which was used to give Eric the Mega Battle Armor. The Q-Rex continues to serve Eric (although he didn't use it in Reinforcements from the Future or Forever Red). The only time it served someone else was during The End of Time when Wes Collins was given the Quantum Morpher when Eric was badly injured. Wes was able to control the Q-Rex and use it to destroy Doomtron. Q-Rex apparently has more than one power source as during that battle, Wes was forced to neutralize the Trizirium Crystal powering it, but the Q-Rex was still able to fight and had enough power to destroy Doomtron with its lasers.
Read more about this topic: Zords In Power Rangers Time Force