Troika

After the initial defeat of the Demonite, Falkar, and Thunderon, Diabolico collected their crystal-like forms and merged their likenesses together, creating Troika (pronounced as Troy-kuh). He was an amalgamation of all three monsters' appearences, with each of their faces on one side of the monster's head. It had Demonite's sword arm and Thunderon's spiked fist, and feathery details on his hide (a reference to the trio's exploding feathers scheme). Troika was a powerful opponent, taking out the Lightspeed Rescue Rangers in record time. Due to his immense abilities thanks to the combination, the Rangers were forced to retreat, while Trika himself went out on a rampage through Mariner Bay. When the Rangers returned during his assault, he was still able to initially beat them into submission. The Rangers were then equipped with Battle Boosters, which enhanced their abilities. With this new power, the Red Ranger then charged at Trika, and sucessfully pulled off the blade on Troika's right arm. Troika was surprised, and distracted long enough for the Red Ranger to give him a right jab, which countered Troika's own jab and punctured his chest. The Rangers then activated their Booster Beams, which tore into Troika, eliminating him (but not causing him to explode, as with most Power Rangers monsters).